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About Bhagvan Kommadi

Bhagvan Kommadi is the Founder of Architect Corner & has around 20 years’ experience in the industry, ranging from large scale enterprise development to helping incubate software product start-ups. He has done Masters in Industrial Systems Engineering at Georgia Institute of Technology (1997) and Bachelors in Aerospace Engineering from Indian Institute of Technology, Madras (1993). He is member of IFX forum,Oracle JCP and participant in Java Community Process. He founded Quantica Computacao, the first quantum computing startup in India. Markets and Markets have positioned Quantica Computacao in ‘Emerging Companies’ section of Quantum Computing quadrants. Bhagvan has engineered and developed simulators and tools in the area of quantum technology using IBM Q, Microsoft Q# and Google QScript. He has reviewed the Manning book titled : "Machine Learning with TensorFlow”. He is also the author of Packt Publishing book - "Hands-On Data Structures and Algorithms with Go".He is member of IFX forum,Oracle JCP and participant in Java Community Process. He is member of the MIT Technology Review Global Panel.

Apache Kafka Simple Producer Example

1. Introduction

This is an in-depth article related to the Apache Kafka producer example. Apache Kafka is an Apache open-source project. It was initially created on Linkedin. Kafka framework was created in java and scala. It supports publish-subscribe messaging and is fault-tolerant. It is scalable and performs for high-volume messaging. Zookeeper is the basic component that manages the Apache Kafka Server. Kafka has features related to reliability, scalability, performance, distributed logging, and durability.

2. Apache Kafka – Simple Producer

2.1 Prerequisites

Java 7 or 8 is required on the linux, windows or mac operating system. Maven 3.6.1 is required for building the spring and hibernate application.

2.2 Download

You can download Java 8 can be downloaded from the Oracle web site .  Kafka framework’s latest releases are available from this website.

2.3 Setup

You can set the environment variables for JAVA_HOME and PATH. They can be set as shown below:

Setup
JAVA_HOME="/desktop/jdk1.8.0_73"
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH

2.4 How to download and install Apache Kafka

Apache Kafka’s latest releases are available from the apache Kafka website. After downloading the zip file can be extracted to a folder.

To start the zookeeper, you can use the command below:

Zoo keeper
bin/zookeeper-server-start.sh config/zookeeper.properties

The output of the above command is shown as below:

Zoo keeper Output
apples-MacBook-Air:kafka_2.12-2.8.0 bhagvan.kommadi$ bin/zookeeper-server-start.sh config/zookeeper.properties
[2021-05-10 14:15:56,896] INFO Reading configuration from: config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:56,905] WARN config/zookeeper.properties is relative. Prepend ./ to indicate that you're sure! (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:56,945] INFO clientPortAddress is 0.0.0.0:2181 (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:56,945] INFO secureClientPort is not set (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:56,956] INFO autopurge.snapRetainCount set to 3 (org.apache.zookeeper.server.DatadirCleanupManager)
[2021-05-10 14:15:56,959] INFO autopurge.purgeInterval set to 0 (org.apache.zookeeper.server.DatadirCleanupManager)
[2021-05-10 14:15:56,960] INFO Purge task is not scheduled. (org.apache.zookeeper.server.DatadirCleanupManager)
[2021-05-10 14:15:56,960] WARN Either no config or no quorum defined in config, running  in standalone mode (org.apache.zookeeper.server.quorum.QuorumPeerMain)
[2021-05-10 14:15:56,985] INFO Log4j 1.2 jmx support found and enabled. (org.apache.zookeeper.jmx.ManagedUtil)
[2021-05-10 14:15:57,020] INFO Reading configuration from: config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:57,021] WARN config/zookeeper.properties is relative. Prepend ./ to indicate that you're sure! (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:57,024] INFO clientPortAddress is 0.0.0.0:2181 (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:57,024] INFO secureClientPort is not set (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2021-05-10 14:15:57,024] INFO Starting server (org.apache.zookeeper.server.ZooKeeperServerMain)
[2021-05-10 14:15:57,046] INFO zookeeper.snapshot.trust.empty : false (org.apache.zookeeper.server.persistence.FileTxnSnapLog)
[2021-05-10 14:15:57,127] INFO Server environment:zookeeper.version=3.5.9-83df9301aa5c2a5d284a9940177808c01bc35cef, built on 01/06/2021 20:03 GMT (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,127] INFO Server environment:host.name=localhost (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,129] INFO Server environment:java.version=1.8.0_101 (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,129] INFO Server environment:java.vendor=Oracle Corporation (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,130] INFO Server environment:java.home=/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home/jre (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,130] INFO Server environment:java.class.path=/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/activation-1.1.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/aopalliance-repackaged-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/argparse4j-0.7.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/audience-annotations-0.5.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/commons-cli-1.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/commons-lang3-3.8.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-api-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-basic-auth-extension-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-file-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-json-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-mirror-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-mirror-client-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-runtime-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-transforms-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-api-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-locator-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-utils-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-annotations-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-core-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-databind-2.10.5.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-dataformat-csv-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-datatype-jdk8-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-jaxrs-base-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-jaxrs-json-provider-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-jaxb-annotations-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-paranamer-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-scala_2.12-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.activation-api-1.2.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.annotation-api-1.3.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.inject-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.validation-api-2.0.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.ws.rs-api-2.1.6.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.xml.bind-api-2.3.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javassist-3.27.0-GA.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javax.servlet-api-3.1.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javax.ws.rs-api-2.1.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jaxb-api-2.3.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-client-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-common-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-container-servlet-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-container-servlet-core-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-hk2-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-media-jaxb-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-server-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-client-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-continuation-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-http-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-io-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-security-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-server-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-servlet-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-servlets-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-util-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-util-ajax-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jline-3.12.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jopt-simple-5.0.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-clients-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-log4j-appender-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-metadata-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-raft-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-shell-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-examples-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-scala_2.12-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-test-utils-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-tools-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka_2.12-2.8.0-sources.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka_2.12-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/log4j-1.2.17.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/lz4-java-1.7.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/maven-artifact-3.6.3.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/metrics-core-2.2.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-buffer-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-codec-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-common-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-handler-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-resolver-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-native-epoll-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-native-unix-common-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/osgi-resource-locator-1.0.3.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/paranamer-2.8.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/plexus-utils-3.2.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/reflections-0.9.12.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/rocksdbjni-5.18.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-collection-compat_2.12-2.3.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-java8-compat_2.12-0.9.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-library-2.12.13.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-logging_2.12-3.9.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-reflect-2.12.13.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/slf4j-api-1.7.30.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/slf4j-log4j12-1.7.30.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/snappy-java-1.1.8.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zookeeper-3.5.9.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zookeeper-jute-3.5.9.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zstd-jni-1.4.9-1.jar (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,152] INFO Server environment:java.library.path=/Users/bhagvan.kommadi/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:. (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,152] INFO Server environment:java.io.tmpdir=/var/folders/cr/0y892lq14qv7r24yl0gh0_dm0000gp/T/ (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,153] INFO Server environment:java.compiler= (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,153] INFO Server environment:os.name=Mac OS X (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,153] INFO Server environment:os.arch=x86_64 (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,153] INFO Server environment:os.version=10.16 (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,153] INFO Server environment:user.name=bhagvan.kommadi (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,153] INFO Server environment:user.home=/Users/bhagvan.kommadi (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,156] INFO Server environment:user.dir=/Users/bhagvan.kommadi/Desktop/kafka_2.12-2.8.0 (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,156] INFO Server environment:os.memory.free=499MB (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,156] INFO Server environment:os.memory.max=512MB (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,156] INFO Server environment:os.memory.total=512MB (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,171] INFO minSessionTimeout set to 6000 (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,171] INFO maxSessionTimeout set to 60000 (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,177] INFO Created server with tickTime 3000 minSessionTimeout 6000 maxSessionTimeout 60000 datadir /tmp/zookeeper/version-2 snapdir /tmp/zookeeper/version-2 (org.apache.zookeeper.server.ZooKeeperServer)
[2021-05-10 14:15:57,249] INFO Using org.apache.zookeeper.server.NIOServerCnxnFactory as server connection factory (org.apache.zookeeper.server.ServerCnxnFactory)
[2021-05-10 14:15:57,280] INFO Configuring NIO connection handler with 10s sessionless connection timeout, 1 selector thread(s), 8 worker threads, and 64 kB direct buffers. (org.apache.zookeeper.server.NIOServerCnxnFactory)
[2021-05-10 14:15:57,361] INFO binding to port 0.0.0.0/0.0.0.0:2181 (org.apache.zookeeper.server.NIOServerCnxnFactory)
[2021-05-10 14:15:57,458] INFO zookeeper.snapshotSizeFactor = 0.33 (org.apache.zookeeper.server.ZKDatabase)
[2021-05-10 14:15:58,056] INFO Snapshotting: 0x0 to /tmp/zookeeper/version-2/snapshot.0 (org.apache.zookeeper.server.persistence.FileTxnSnapLog)
[2021-05-10 14:15:58,081] INFO Snapshotting: 0x0 to /tmp/zookeeper/version-2/snapshot.0 (org.apache.zookeeper.server.persistence.FileTxnSnapLog)
[2021-05-10 14:15:58,644] INFO PrepRequestProcessor (sid:0) started, reconfigEnabled=false (org.apache.zookeeper.server.PrepRequestProcessor)
[2021-05-10 14:15:58,676] INFO Using checkIntervalMs=60000 maxPerMinute=10000 (org.apache.zookeeper.server.ContainerManager)

You can now start the apache kafka server using the command below:

Apache Kafka Server Run Command
bin/kafka-server-start.sh config/server.properties

The output of the above command is shown as below:Apache Kafka Server Output

apples-MacBook-Air:kafka_2.12-2.8.0 bhagvan.kommadi$ bin/kafka-server-start.sh config/server.properties
[2021-05-10 14:17:28,975] INFO Registered kafka:type=kafka.Log4jController MBean (kafka.utils.Log4jControllerRegistration$)
[2021-05-10 14:17:33,397] INFO Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation (org.apache.zookeeper.common.X509Util)
[2021-05-10 14:17:34,043] INFO Registered signal handlers for TERM, INT, HUP (org.apache.kafka.common.utils.LoggingSignalHandler)
[2021-05-10 14:17:34,108] INFO starting (kafka.server.KafkaServer)
[2021-05-10 14:17:34,112] INFO Connecting to zookeeper on localhost:2181 (kafka.server.KafkaServer)
[2021-05-10 14:17:34,319] INFO [ZooKeeperClient Kafka server] Initializing a new session to localhost:2181. (kafka.zookeeper.ZooKeeperClient)
[2021-05-10 14:17:34,382] INFO Client environment:zookeeper.version=3.5.9-83df9301aa5c2a5d284a9940177808c01bc35cef, built on 01/06/2021 20:03 GMT (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,382] INFO Client environment:host.name=localhost (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,382] INFO Client environment:java.version=1.8.0_101 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,382] INFO Client environment:java.vendor=Oracle Corporation (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,383] INFO Client environment:java.home=/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home/jre (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,383] INFO Client environment:java.class.path=/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/activation-1.1.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/aopalliance-repackaged-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/argparse4j-0.7.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/audience-annotations-0.5.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/commons-cli-1.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/commons-lang3-3.8.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-api-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-basic-auth-extension-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-file-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-json-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-mirror-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-mirror-client-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-runtime-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-transforms-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-api-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-locator-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-utils-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-annotations-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-core-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-databind-2.10.5.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-dataformat-csv-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-datatype-jdk8-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-jaxrs-base-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-jaxrs-json-provider-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-jaxb-annotations-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-paranamer-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-scala_2.12-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.activation-api-1.2.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.annotation-api-1.3.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.inject-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.validation-api-2.0.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.ws.rs-api-2.1.6.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.xml.bind-api-2.3.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javassist-3.27.0-GA.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javax.servlet-api-3.1.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javax.ws.rs-api-2.1.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jaxb-api-2.3.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-client-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-common-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-container-servlet-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-container-servlet-core-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-hk2-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-media-jaxb-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-server-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-client-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-continuation-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-http-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-io-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-security-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-server-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-servlet-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-servlets-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-util-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-util-ajax-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jline-3.12.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jopt-simple-5.0.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-clients-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-log4j-appender-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-metadata-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-raft-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-shell-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-examples-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-scala_2.12-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-test-utils-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-tools-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka_2.12-2.8.0-sources.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka_2.12-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/log4j-1.2.17.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/lz4-java-1.7.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/maven-artifact-3.6.3.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/metrics-core-2.2.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-buffer-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-codec-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-common-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-handler-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-resolver-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-native-epoll-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-native-unix-common-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/osgi-resource-locator-1.0.3.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/paranamer-2.8.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/plexus-utils-3.2.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/reflections-0.9.12.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/rocksdbjni-5.18.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-collection-compat_2.12-2.3.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-java8-compat_2.12-0.9.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-library-2.12.13.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-logging_2.12-3.9.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-reflect-2.12.13.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/slf4j-api-1.7.30.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/slf4j-log4j12-1.7.30.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/snappy-java-1.1.8.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zookeeper-3.5.9.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zookeeper-jute-3.5.9.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zstd-jni-1.4.9-1.jar (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,389] INFO Client environment:java.library.path=/Users/bhagvan.kommadi/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:. (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,391] INFO Client environment:java.io.tmpdir=/var/folders/cr/0y892lq14qv7r24yl0gh0_dm0000gp/T/ (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,392] INFO Client environment:java.compiler= (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,392] INFO Client environment:os.name=Mac OS X (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,393] INFO Client environment:os.arch=x86_64 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,398] INFO Client environment:os.version=10.16 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,400] INFO Client environment:user.name=bhagvan.kommadi (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,401] INFO Client environment:user.home=/Users/bhagvan.kommadi (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,401] INFO Client environment:user.dir=/Users/bhagvan.kommadi/Desktop/kafka_2.12-2.8.0 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,401] INFO Client environment:os.memory.free=973MB (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,402] INFO Client environment:os.memory.max=1024MB (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,402] INFO Client environment:os.memory.total=1024MB (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,535] INFO Initiating client connection, connectString=localhost:2181 sessionTimeout=18000 watcher=kafka.zookeeper.ZooKeeperClient$ZooKeeperClientWatcher$@799f10e1 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,568] INFO jute.maxbuffer value is 4194304 Bytes (org.apache.zookeeper.ClientCnxnSocket)
[2021-05-10 14:17:34,590] INFO zookeeper.request.timeout value is 0. feature enabled= (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,596] INFO [ZooKeeperClient Kafka server] Waiting until connected. (kafka.zookeeper.ZooKeeperClient)
[2021-05-10 14:17:34,606] INFO Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,728] INFO Socket connection established, initiating session, client: /0:0:0:0:0:0:0:1:51339, server: localhost/0:0:0:0:0:0:0:1:2181 (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,902] INFO Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x10000234a530000, negotiated timeout = 18000 (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,954] INFO [ZooKeeperClient Kafka server] Connected. (kafka.zookeeper.ZooKeeperClient)
[2021-05-10 14:17:35,424] INFO [feature-zk-node-event-process-thread]: Starting (kafka.server.FinalizedFeatureChangeListener$ChangeNotificationProcessorThread)
[2021-05-10 14:17:35,456] INFO Feature ZK node at path: /feature does not exist (kafka.server.FinalizedFeatureChangeListener)
[2021-05-10 14:17:35,457] INFO Cleared cache (kafka.server.FinalizedFeatureCache)
[2021-05-10 14:17:36,213] INFO Cluster ID = amutkB48RcCbNccRQjgW3g (kafka.server.KafkaServer)
[2021-05-10 14:17:36,225] WARN No meta.properties file under dir /tmp/kafka-logs/meta.properties (kafka.server.BrokerMetadataCheckpoint)
[2021-05-10 14:17:36,521] INFO KafkaConfig values: 
	advertised.host.name = null
	advertised.listeners = null
	advertised.port = null
	alter.config.policy.class.name = null
	alter.log.dirs.replication.quota.window.num = 11
	alter.log.dirs.replication.quota.window.size.seconds = 1
	authorizer.class.name = 
	auto.create.topics.enable = true
	auto.leader.rebalance.enable = true
	background.threads = 10
	broker.heartbeat.interval.ms = 2000
	broker.id = 0
	broker.id.generation.enable = true
	broker.rack = null
	broker.session.timeout.ms = 9000
	client.quota.callback.class = null
	compression.type = producer
	connection.failed.authentication.delay.ms = 100
	connections.max.idle.ms = 600000
	connections.max.reauth.ms = 0
	control.plane.listener.name = null
	controlled.shutdown.enable = true
	controlled.shutdown.max.retries = 3
	controlled.shutdown.retry.backoff.ms = 5000
	controller.listener.names = null
	controller.quorum.append.linger.ms = 25
	controller.quorum.election.backoff.max.ms = 1000
	controller.quorum.election.timeout.ms = 1000
	controller.quorum.fetch.timeout.ms = 2000
	controller.quorum.request.timeout.ms = 2000
	controller.quorum.retry.backoff.ms = 20
	controller.quorum.voters = []
	controller.quota.window.num = 11
	controller.quota.window.size.seconds = 1
	controller.socket.timeout.ms = 30000
	create.topic.policy.class.name = null
	default.replication.factor = 1
	delegation.token.expiry.check.interval.ms = 3600000
	delegation.token.expiry.time.ms = 86400000
	delegation.token.master.key = null
	delegation.token.max.lifetime.ms = 604800000
	delegation.token.secret.key = null
	delete.records.purgatory.purge.interval.requests = 1
	delete.topic.enable = true
	fetch.max.bytes = 57671680
	fetch.purgatory.purge.interval.requests = 1000
	group.initial.rebalance.delay.ms = 0
	group.max.session.timeout.ms = 1800000
	group.max.size = 2147483647
	group.min.session.timeout.ms = 6000
	host.name = 
	initial.broker.registration.timeout.ms = 60000
	inter.broker.listener.name = null
	inter.broker.protocol.version = 2.8-IV1
	kafka.metrics.polling.interval.secs = 10
	kafka.metrics.reporters = []
	leader.imbalance.check.interval.seconds = 300
	leader.imbalance.per.broker.percentage = 10
	listener.security.protocol.map = PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
	listeners = null
	log.cleaner.backoff.ms = 15000
	log.cleaner.dedupe.buffer.size = 134217728
	log.cleaner.delete.retention.ms = 86400000
	log.cleaner.enable = true
	log.cleaner.io.buffer.load.factor = 0.9
	log.cleaner.io.buffer.size = 524288
	log.cleaner.io.max.bytes.per.second = 1.7976931348623157E308
	log.cleaner.max.compaction.lag.ms = 9223372036854775807
	log.cleaner.min.cleanable.ratio = 0.5
	log.cleaner.min.compaction.lag.ms = 0
	log.cleaner.threads = 1
	log.cleanup.policy = [delete]
	log.dir = /tmp/kafka-logs
	log.dirs = /tmp/kafka-logs
	log.flush.interval.messages = 9223372036854775807
	log.flush.interval.ms = null
	log.flush.offset.checkpoint.interval.ms = 60000
	log.flush.scheduler.interval.ms = 9223372036854775807
	log.flush.start.offset.checkpoint.interval.ms = 60000
	log.index.interval.bytes = 4096
	log.index.size.max.bytes = 10485760
	log.message.downconversion.enable = true
	log.message.format.version = 2.8-IV1
	log.message.timestamp.difference.max.ms = 9223372036854775807
	log.message.timestamp.type = CreateTime
	log.preallocate = false
	log.retention.bytes = -1
	log.retention.check.interval.ms = 300000
	log.retention.hours = 168
	log.retention.minutes = null
	log.retention.ms = null
	log.roll.hours = 168
	log.roll.jitter.hours = 0
	log.roll.jitter.ms = null
	log.roll.ms = null
	log.segment.bytes = 1073741824
	log.segment.delete.delay.ms = 60000
	max.connection.creation.rate = 2147483647
	max.connections = 2147483647
	max.connections.per.ip = 2147483647
	max.connections.per.ip.overrides = 
	max.incremental.fetch.session.cache.slots = 1000
	message.max.bytes = 1048588
	metadata.log.dir = null
	metric.reporters = []
	metrics.num.samples = 2
	metrics.recording.level = INFO
	metrics.sample.window.ms = 30000
	min.insync.replicas = 1
	node.id = -1
	num.io.threads = 8
	num.network.threads = 3
	num.partitions = 1
	num.recovery.threads.per.data.dir = 1
	num.replica.alter.log.dirs.threads = null
	num.replica.fetchers = 1
	offset.metadata.max.bytes = 4096
	offsets.commit.required.acks = -1
	offsets.commit.timeout.ms = 5000
	offsets.load.buffer.size = 5242880
	offsets.retention.check.interval.ms = 600000
	offsets.retention.minutes = 10080
	offsets.topic.compression.codec = 0
	offsets.topic.num.partitions = 50
	offsets.topic.replication.factor = 1
	offsets.topic.segment.bytes = 104857600
	password.encoder.cipher.algorithm = AES/CBC/PKCS5Padding
	password.encoder.iterations = 4096
	password.encoder.key.length = 128
	password.encoder.keyfactory.algorithm = null
	password.encoder.old.secret = null
	password.encoder.secret = null
	port = 9092
	principal.builder.class = null
	process.roles = []
	producer.purgatory.purge.interval.requests = 1000
	queued.max.request.bytes = -1
	queued.max.requests = 500
	quota.consumer.default = 9223372036854775807
	quota.producer.default = 9223372036854775807
	quota.window.num = 11
	quota.window.size.seconds = 1
	replica.fetch.backoff.ms = 1000
	replica.fetch.max.bytes = 1048576
	replica.fetch.min.bytes = 1
	replica.fetch.response.max.bytes = 10485760
	replica.fetch.wait.max.ms = 500
	replica.high.watermark.checkpoint.interval.ms = 5000
	replica.lag.time.max.ms = 30000
	replica.selector.class = null
	replica.socket.receive.buffer.bytes = 65536
	replica.socket.timeout.ms = 30000
	replication.quota.window.num = 11
	replication.quota.window.size.seconds = 1
	request.timeout.ms = 30000
	reserved.broker.max.id = 1000
	sasl.client.callback.handler.class = null
	sasl.enabled.mechanisms = [GSSAPI]
	sasl.jaas.config = null
	sasl.kerberos.kinit.cmd = /usr/bin/kinit
	sasl.kerberos.min.time.before.relogin = 60000
	sasl.kerberos.principal.to.local.rules = [DEFAULT]
	sasl.kerberos.service.name = null
	sasl.kerberos.ticket.renew.jitter = 0.05
	sasl.kerberos.ticket.renew.window.factor = 0.8
	sasl.login.callback.handler.class = null
	sasl.login.class = null
	sasl.login.refresh.buffer.seconds = 300
	sasl.login.refresh.min.period.seconds = 60
	sasl.login.refresh.window.factor = 0.8
	sasl.login.refresh.window.jitter = 0.05
	sasl.mechanism.controller.protocol = GSSAPI
	sasl.mechanism.inter.broker.protocol = GSSAPI
	sasl.server.callback.handler.class = null
	security.inter.broker.protocol = PLAINTEXT
	security.providers = null
	socket.connection.setup.timeout.max.ms = 30000
	socket.connection.setup.timeout.ms = 10000
	socket.receive.buffer.bytes = 102400
	socket.request.max.bytes = 104857600
	socket.send.buffer.bytes = 102400
	ssl.cipher.suites = []
	ssl.client.auth = none
	ssl.enabled.protocols = [TLSv1.2]
	ssl.endpoint.identification.algorithm = https
	ssl.engine.factory.class = null
	ssl.key.password = null
	ssl.keymanager.algorithm = SunX509
	ssl.keystore.certificate.chain = null
	ssl.keystore.key = null
	ssl.keystore.location = null
	ssl.keystore.password = null
	ssl.keystore.type = JKS
	ssl.principal.mapping.rules = DEFAULT
	ssl.protocol = TLSv1.2
	ssl.provider = null
	ssl.secure.random.implementation = null
	ssl.trustmanager.algorithm = PKIX
	ssl.truststore.certificates = null
	ssl.truststore.location = null
	ssl.truststore.password = null
	ssl.truststore.type = JKS
	transaction.abort.timed.out.transaction.cleanup.interval.ms = 10000
	transaction.max.timeout.ms = 900000
	transaction.remove.expired.transaction.cleanup.interval.ms = 3600000
	transaction.state.log.load.buffer.size = 5242880
	transaction.state.log.min.isr = 1
	transaction.state.log.num.partitions = 50
	transaction.state.log.replication.factor = 1
	transaction.state.log.segment.bytes = 104857600
	transactional.id.expiration.ms = 604800000
	unclean.leader.election.enable = false
	zookeeper.clientCnxnSocket = null
	zookeeper.connect = localhost:2181
	zookeeper.connection.timeout.ms = 18000
	zookeeper.max.in.flight.requests = 10
	zookeeper.session.timeout.ms = 18000
	zookeeper.set.acl = false
	zookeeper.ssl.cipher.suites = null
	zookeeper.ssl.client.enable = false
	zookeeper.ssl.crl.enable = false
	zookeeper.ssl.enabled.protocols = null
	zookeeper.ssl.endpoint.identification.algorithm = HTTPS
	zookeeper.ssl.keystore.location = null
	zookeeper.ssl.keystore.password = null
	zookeeper.ssl.keystore.type = null
	zookeeper.ssl.ocsp.enable = false
	zookeeper.ssl.protocol = TLSv1.2
	zookeeper.ssl.truststore.location = null
	zookeeper.ssl.truststore.password = null
	zookeeper.ssl.truststore.type = null
	zookeeper.sync.time.ms = 2000
 (kafka.server.KafkaConfig)
[2021-05-10 14:17:36,552] INFO KafkaConfig values: 
	advertised.host.name = null
	advertised.listeners = null
	advertised.port = null
	alter.config.policy.class.name = null
	alter.log.dirs.replication.quota.window.num = 11
	alter.log.dirs.replication.quota.window.size.seconds = 1
	authorizer.class.name = 
	auto.create.topics.enable = true
	auto.leader.rebalance.enable = true
	background.threads = 10
	broker.heartbeat.interval.ms = 2000
	broker.id = 0
	broker.id.generation.enable = true
	broker.rack = null
	broker.session.timeout.ms = 9000
	client.quota.callback.class = null
	compression.type = producer
	connection.failed.authentication.delay.ms = 100
	connections.max.idle.ms = 600000
	connections.max.reauth.ms = 0
	control.plane.listener.name = null
	controlled.shutdown.enable = true
	controlled.shutdown.max.retries = 3
	controlled.shutdown.retry.backoff.ms = 5000
	controller.listener.names = null
	controller.quorum.append.linger.ms = 25
	controller.quorum.election.backoff.max.ms = 1000
	controller.quorum.election.timeout.ms = 1000
	controller.quorum.fetch.timeout.ms = 2000
	controller.quorum.request.timeout.ms = 2000
	controller.quorum.retry.backoff.ms = 20
	controller.quorum.voters = []
	controller.quota.window.num = 11
	controller.quota.window.size.seconds = 1
	controller.socket.timeout.ms = 30000
	create.topic.policy.class.name = null
	default.replication.factor = 1
	delegation.token.expiry.check.interval.ms = 3600000
	delegation.token.expiry.time.ms = 86400000
	delegation.token.master.key = null
	delegation.token.max.lifetime.ms = 604800000
	delegation.token.secret.key = null
	delete.records.purgatory.purge.interval.requests = 1
	delete.topic.enable = true
	fetch.max.bytes = 57671680
	fetch.purgatory.purge.interval.requests = 1000
	group.initial.rebalance.delay.ms = 0
	group.max.session.timeout.ms = 1800000
	group.max.size = 2147483647
	group.min.session.timeout.ms = 6000
	host.name = 
	initial.broker.registration.timeout.ms = 60000
	inter.broker.listener.name = null
	inter.broker.protocol.version = 2.8-IV1
	kafka.metrics.polling.interval.secs = 10
	kafka.metrics.reporters = []
	leader.imbalance.check.interval.seconds = 300
	leader.imbalance.per.broker.percentage = 10
	listener.security.protocol.map = PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
	listeners = null
	log.cleaner.backoff.ms = 15000
	log.cleaner.dedupe.buffer.size = 134217728
	log.cleaner.delete.retention.ms = 86400000
	log.cleaner.enable = true
	log.cleaner.io.buffer.load.factor = 0.9
	log.cleaner.io.buffer.size = 524288
	log.cleaner.io.max.bytes.per.second = 1.7976931348623157E308
	log.cleaner.max.compaction.lag.ms = 9223372036854775807
	log.cleaner.min.cleanable.ratio = 0.5
	log.cleaner.min.compaction.lag.ms = 0
	log.cleaner.threads = 1
	log.cleanup.policy = [delete]
	log.dir = /tmp/kafka-logs
	log.dirs = /tmp/kafka-logs
	log.flush.interval.messages = 9223372036854775807
	log.flush.interval.ms = null
	log.flush.offset.checkpoint.interval.ms = 60000
	log.flush.scheduler.interval.ms = 9223372036854775807
	log.flush.start.offset.checkpoint.interval.ms = 60000
	log.index.interval.bytes = 4096
	log.index.size.max.bytes = 10485760
	log.message.downconversion.enable = true
	log.message.format.version = 2.8-IV1
	log.message.timestamp.difference.max.ms = 9223372036854775807
	log.message.timestamp.type = CreateTime
	log.preallocate = false
	log.retention.bytes = -1
	log.retention.check.interval.ms = 300000
	log.retention.hours = 168
	log.retention.minutes = null
	log.retention.ms = null
	log.roll.hours = 168
	log.roll.jitter.hours = 0
	log.roll.jitter.ms = null
	log.roll.ms = null
	log.segment.bytes = 1073741824
	log.segment.delete.delay.ms = 60000
	max.connection.creation.rate = 2147483647
	max.connections = 2147483647
	max.connections.per.ip = 2147483647
	max.connections.per.ip.overrides = 
	max.incremental.fetch.session.cache.slots = 1000
	message.max.bytes = 1048588
	metadata.log.dir = null
	metric.reporters = []
	metrics.num.samples = 2
	metrics.recording.level = INFO
	metrics.sample.window.ms = 30000
	min.insync.replicas = 1
	node.id = -1
	num.io.threads = 8
	num.network.threads = 3
	num.partitions = 1
	num.recovery.threads.per.data.dir = 1
	num.replica.alter.log.dirs.threads = null
	num.replica.fetchers = 1
	offset.metadata.max.bytes = 4096
	offsets.commit.required.acks = -1
	offsets.commit.timeout.ms = 5000
	offsets.load.buffer.size = 5242880
	offsets.retention.check.interval.ms = 600000
	offsets.retention.minutes = 10080
	offsets.topic.compression.codec = 0
	offsets.topic.num.partitions = 50
	offsets.topic.replication.factor = 1
	offsets.topic.segment.bytes = 104857600
	password.encoder.cipher.algorithm = AES/CBC/PKCS5Padding
	password.encoder.iterations = 4096
	password.encoder.key.length = 128
	password.encoder.keyfactory.algorithm = null
	password.encoder.old.secret = null
	password.encoder.secret = null
	port = 9092
	principal.builder.class = null
	process.roles = []
	producer.purgatory.purge.interval.requests = 1000
	queued.max.request.bytes = -1
	queued.max.requests = 500
	quota.consumer.default = 9223372036854775807
	quota.producer.default = 9223372036854775807
	quota.window.num = 11
	quota.window.size.seconds = 1
	replica.fetch.backoff.ms = 1000
	replica.fetch.max.bytes = 1048576
	replica.fetch.min.bytes = 1
	replica.fetch.response.max.bytes = 10485760
	replica.fetch.wait.max.ms = 500
	replica.high.watermark.checkpoint.interval.ms = 5000
	replica.lag.time.max.ms = 30000
	replica.selector.class = null
	replica.socket.receive.buffer.bytes = 65536
	replica.socket.timeout.ms = 30000
	replication.quota.window.num = 11
	replication.quota.window.size.seconds = 1
	request.timeout.ms = 30000
	reserved.broker.max.id = 1000
	sasl.client.callback.handler.class = null
	sasl.enabled.mechanisms = [GSSAPI]
	sasl.jaas.config = null
	sasl.kerberos.kinit.cmd = /usr/bin/kinit
	sasl.kerberos.min.time.before.relogin = 60000
	sasl.kerberos.principal.to.local.rules = [DEFAULT]
	sasl.kerberos.service.name = null
	sasl.kerberos.ticket.renew.jitter = 0.05
	sasl.kerberos.ticket.renew.window.factor = 0.8
	sasl.login.callback.handler.class = null
	sasl.login.class = null
	sasl.login.refresh.buffer.seconds = 300
	sasl.login.refresh.min.period.seconds = 60
	sasl.login.refresh.window.factor = 0.8
	sasl.login.refresh.window.jitter = 0.05
	sasl.mechanism.controller.protocol = GSSAPI
	sasl.mechanism.inter.broker.protocol = GSSAPI
	sasl.server.callback.handler.class = null
	security.inter.broker.protocol = PLAINTEXT
	security.providers = null
	socket.connection.setup.timeout.max.ms = 30000
	socket.connection.setup.timeout.ms = 10000
	socket.receive.buffer.bytes = 102400
	socket.request.max.bytes = 104857600
	socket.send.buffer.bytes = 102400
	ssl.cipher.suites = []
	ssl.client.auth = none
	ssl.enabled.protocols = [TLSv1.2]
	ssl.endpoint.identification.algorithm = https
	ssl.engine.factory.class = null
	ssl.key.password = null
	ssl.keymanager.algorithm = SunX509
	ssl.keystore.certificate.chain = null
	ssl.keystore.key = null
	ssl.keystore.location = null
	ssl.keystore.password = null
	ssl.keystore.type = JKS
	ssl.principal.mapping.rules = DEFAULT
	ssl.protocol = TLSv1.2
	ssl.provider = null
	ssl.secure.random.implementation = null
	ssl.trustmanager.algorithm = PKIX
	ssl.truststore.certificates = null
	ssl.truststore.location = null
	ssl.truststore.password = null
	ssl.truststore.type = JKS
	transaction.abort.timed.out.transaction.cleanup.interval.ms = 10000
	transaction.max.timeout.ms = 900000
	transaction.remove.expired.transaction.cleanup.interval.ms = 3600000
	transaction.state.log.load.buffer.size = 5242880
	transaction.state.log.min.isr = 1
	transaction.state.log.num.partitions = 50
	transaction.state.log.replication.factor = 1
	transaction.state.log.segment.bytes = 104857600
	transactional.id.expiration.ms = 604800000
	unclean.leader.election.enable = false
	zookeeper.clientCnxnSocket = null
	zookeeper.connect = localhost:2181
	zookeeper.connection.timeout.ms = 18000
	zookeeper.max.in.flight.requests = 10
	zookeeper.session.timeout.ms = 18000
	zookeeper.set.acl = false
	zookeeper.ssl.cipher.suites = null
	zookeeper.ssl.client.enable = false
	zookeeper.ssl.crl.enable = false
	zookeeper.ssl.enabled.protocols = null
	zookeeper.ssl.endpoint.identification.algorithm = HTTPS
	zookeeper.ssl.keystore.location = null
	zookeeper.ssl.keystore.password = null
	zookeeper.ssl.keystore.type = null
	zookeeper.ssl.ocsp.enable = false
	zookeeper.ssl.protocol = TLSv1.2
	zookeeper.ssl.truststore.location = null
	zookeeper.ssl.truststore.password = null
	zookeeper.ssl.truststore.type = null
	zookeeper.sync.time.ms = 2000
 (kafka.server.KafkaConfig)
[2021-05-10 14:17:37,429] INFO [ThrottledChannelReaper-Fetch]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,431] INFO [ThrottledChannelReaper-Produce]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,436] INFO [ThrottledChannelReaper-Request]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,441] INFO [ThrottledChannelReaper-ControllerMutation]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,515] INFO Log directory /tmp/kafka-logs not found, creating it. (kafka.log.LogManager)
[2021-05-10 14:17:38,257] INFO Loading logs from log dirs ArrayBuffer(/tmp/kafka-logs) (kafka.log.LogManager)
[2021-05-10 14:17:38,415] INFO Attempting recovery for all logs in /tmp/kafka-logs since no clean shutdown file was found (kafka.log.LogManager)
[2021-05-10 14:17:38,941] INFO Loaded 0 logs in 658ms. (kafka.log.LogManager)
[2021-05-10 14:17:38,945] INFO Starting log cleanup with a period of 300000 ms. (kafka.log.LogManager)
[2021-05-10 14:17:38,964] INFO Starting log flusher with a default period of 9223372036854775807 ms. (kafka.log.LogManager)
[2021-05-10 14:17:46,163] INFO Updated connection-accept-rate max connection creation rate to 2147483647 (kafka.network.ConnectionQuotas)
[2021-05-10 14:17:46,337] INFO Awaiting socket connections on 0.0.0.0:9092. (kafka.network.Acceptor)
[2021-05-10 14:17:47,115] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Created data-plane acceptor and processors for endpoint : ListenerName(PLAINTEXT) (kafka.network.SocketServer)
[2021-05-10 14:17:47,786] INFO [broker-0-to-controller-send-thread]: Starting (kafka.server.BrokerToControllerRequestThread)
[2021-05-10 14:17:48,320] INFO [ExpirationReaper-0-Produce]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,327] INFO [ExpirationReaper-0-Fetch]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,330] INFO [ExpirationReaper-0-DeleteRecords]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,333] INFO [ExpirationReaper-0-ElectLeader]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,466] INFO [LogDirFailureHandler]: Starting (kafka.server.ReplicaManager$LogDirFailureHandler)
[2021-05-10 14:17:48,922] INFO Creating /brokers/ids/0 (is it secure? false) (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,027] INFO Stat of the created znode at /brokers/ids/0 is: 25,25,1620636468991,1620636468991,1,0,0,72057745608736768,202,0,25
 (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,030] INFO Registered broker 0 at path /brokers/ids/0 with addresses: PLAINTEXT://localhost:9092, czxid (broker epoch): 25 (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,383] INFO [ExpirationReaper-0-topic]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:49,391] INFO Successfully created /controller_epoch with initial epoch 0 (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,423] INFO [ExpirationReaper-0-Heartbeat]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:49,425] INFO [ExpirationReaper-0-Rebalance]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:49,567] INFO Feature ZK node created at path: /feature (kafka.server.FinalizedFeatureChangeListener)
[2021-05-10 14:17:49,652] INFO [GroupCoordinator 0]: Starting up. (kafka.coordinator.group.GroupCoordinator)
[2021-05-10 14:17:49,660] INFO Updated cache from existing  to latest FinalizedFeaturesAndEpoch(features=Features{}, epoch=0). (kafka.server.FinalizedFeatureCache)
[2021-05-10 14:17:49,682] INFO [GroupCoordinator 0]: Startup complete. (kafka.coordinator.group.GroupCoordinator)
[2021-05-10 14:17:50,362] INFO [ProducerId Manager 0]: Acquired new producerId block (brokerId:0,blockStartProducerId:0,blockEndProducerId:999) by writing to Zk with path version 1 (kafka.coordinator.transaction.ProducerIdManager)
[2021-05-10 14:17:50,363] INFO [TransactionCoordinator id=0] Starting up. (kafka.coordinator.transaction.TransactionCoordinator)
[2021-05-10 14:17:50,388] INFO [Transaction Marker Channel Manager 0]: Starting (kafka.coordinator.transaction.TransactionMarkerChannelManager)
[2021-05-10 14:17:50,390] INFO [TransactionCoordinator id=0] Startup complete. (kafka.coordinator.transaction.TransactionCoordinator)
[2021-05-10 14:17:51,027] INFO [ExpirationReaper-0-AlterAcls]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:51,192] INFO [/config/changes-event-process-thread]: Starting (kafka.common.ZkNodeChangeNotificationListener$ChangeEventProcessThread)
[2021-05-10 14:17:51,247] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Starting socket server acceptors and processors (kafka.network.SocketServer)
[2021-05-10 14:17:51,293] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Started data-plane acceptor and processor(s) for endpoint : ListenerName(PLAINTEXT) (kafka.network.SocketServer)
[2021-05-10 14:17:51,294] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Started socket server acceptors and processors (kafka.network.SocketServer)
[2021-05-10 14:17:51,495] INFO Kafka version: 2.8.0 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,495] INFO Kafka commitId: ebb1d6e21cc92130 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,495] INFO Kafka startTimeMs: 1620636471294 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,505] INFO [KafkaServer id=0] started (kafka.server.KafkaServer)
[2021-05-10 14:17:51,520] INFO [broker-0-to-controller-send-thread]: Recorded new controller, from now on will use broker localhost:9092 (id: 0 rack: null) (kafka.server.BrokerToControllerRequestThread)apples-MacBook-Air:kafka_2.12-2.8.0 bhagvan.kommadi$ bin/kafka-server-start.sh config/server.properties
[2021-05-10 14:17:28,975] INFO Registered kafka:type=kafka.Log4jController MBean (kafka.utils.Log4jControllerRegistration$)
[2021-05-10 14:17:33,397] INFO Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation (org.apache.zookeeper.common.X509Util)
[2021-05-10 14:17:34,043] INFO Registered signal handlers for TERM, INT, HUP (org.apache.kafka.common.utils.LoggingSignalHandler)
[2021-05-10 14:17:34,108] INFO starting (kafka.server.KafkaServer)
[2021-05-10 14:17:34,112] INFO Connecting to zookeeper on localhost:2181 (kafka.server.KafkaServer)
[2021-05-10 14:17:34,319] INFO [ZooKeeperClient Kafka server] Initializing a new session to localhost:2181. (kafka.zookeeper.ZooKeeperClient)
[2021-05-10 14:17:34,382] INFO Client environment:zookeeper.version=3.5.9-83df9301aa5c2a5d284a9940177808c01bc35cef, built on 01/06/2021 20:03 GMT (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,382] INFO Client environment:host.name=localhost (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,382] INFO Client environment:java.version=1.8.0_101 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,382] INFO Client environment:java.vendor=Oracle Corporation (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,383] INFO Client environment:java.home=/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home/jre (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,383] INFO Client environment:java.class.path=/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/activation-1.1.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/aopalliance-repackaged-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/argparse4j-0.7.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/audience-annotations-0.5.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/commons-cli-1.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/commons-lang3-3.8.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-api-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-basic-auth-extension-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-file-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-json-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-mirror-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-mirror-client-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-runtime-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/connect-transforms-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-api-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-locator-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/hk2-utils-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-annotations-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-core-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-databind-2.10.5.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-dataformat-csv-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-datatype-jdk8-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-jaxrs-base-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-jaxrs-json-provider-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-jaxb-annotations-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-paranamer-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jackson-module-scala_2.12-2.10.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.activation-api-1.2.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.annotation-api-1.3.5.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.inject-2.6.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.validation-api-2.0.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.ws.rs-api-2.1.6.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jakarta.xml.bind-api-2.3.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javassist-3.27.0-GA.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javax.servlet-api-3.1.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/javax.ws.rs-api-2.1.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jaxb-api-2.3.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-client-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-common-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-container-servlet-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-container-servlet-core-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-hk2-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-media-jaxb-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jersey-server-2.31.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-client-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-continuation-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-http-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-io-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-security-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-server-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-servlet-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-servlets-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-util-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jetty-util-ajax-9.4.39.v20210325.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jline-3.12.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/jopt-simple-5.0.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-clients-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-log4j-appender-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-metadata-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-raft-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-shell-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-examples-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-scala_2.12-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-streams-test-utils-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka-tools-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka_2.12-2.8.0-sources.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/kafka_2.12-2.8.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/log4j-1.2.17.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/lz4-java-1.7.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/maven-artifact-3.6.3.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/metrics-core-2.2.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-buffer-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-codec-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-common-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-handler-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-resolver-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-native-epoll-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/netty-transport-native-unix-common-4.1.62.Final.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/osgi-resource-locator-1.0.3.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/paranamer-2.8.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/plexus-utils-3.2.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/reflections-0.9.12.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/rocksdbjni-5.18.4.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-collection-compat_2.12-2.3.0.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-java8-compat_2.12-0.9.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-library-2.12.13.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-logging_2.12-3.9.2.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/scala-reflect-2.12.13.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/slf4j-api-1.7.30.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/slf4j-log4j12-1.7.30.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/snappy-java-1.1.8.1.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zookeeper-3.5.9.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zookeeper-jute-3.5.9.jar:/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/bin/../libs/zstd-jni-1.4.9-1.jar (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,389] INFO Client environment:java.library.path=/Users/bhagvan.kommadi/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:. (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,391] INFO Client environment:java.io.tmpdir=/var/folders/cr/0y892lq14qv7r24yl0gh0_dm0000gp/T/ (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,392] INFO Client environment:java.compiler= (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,392] INFO Client environment:os.name=Mac OS X (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,393] INFO Client environment:os.arch=x86_64 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,398] INFO Client environment:os.version=10.16 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,400] INFO Client environment:user.name=bhagvan.kommadi (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,401] INFO Client environment:user.home=/Users/bhagvan.kommadi (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,401] INFO Client environment:user.dir=/Users/bhagvan.kommadi/Desktop/kafka_2.12-2.8.0 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,401] INFO Client environment:os.memory.free=973MB (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,402] INFO Client environment:os.memory.max=1024MB (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,402] INFO Client environment:os.memory.total=1024MB (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,535] INFO Initiating client connection, connectString=localhost:2181 sessionTimeout=18000 watcher=kafka.zookeeper.ZooKeeperClient$ZooKeeperClientWatcher$@799f10e1 (org.apache.zookeeper.ZooKeeper)
[2021-05-10 14:17:34,568] INFO jute.maxbuffer value is 4194304 Bytes (org.apache.zookeeper.ClientCnxnSocket)
[2021-05-10 14:17:34,590] INFO zookeeper.request.timeout value is 0. feature enabled= (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,596] INFO [ZooKeeperClient Kafka server] Waiting until connected. (kafka.zookeeper.ZooKeeperClient)
[2021-05-10 14:17:34,606] INFO Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,728] INFO Socket connection established, initiating session, client: /0:0:0:0:0:0:0:1:51339, server: localhost/0:0:0:0:0:0:0:1:2181 (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,902] INFO Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x10000234a530000, negotiated timeout = 18000 (org.apache.zookeeper.ClientCnxn)
[2021-05-10 14:17:34,954] INFO [ZooKeeperClient Kafka server] Connected. (kafka.zookeeper.ZooKeeperClient)
[2021-05-10 14:17:35,424] INFO [feature-zk-node-event-process-thread]: Starting (kafka.server.FinalizedFeatureChangeListener$ChangeNotificationProcessorThread)
[2021-05-10 14:17:35,456] INFO Feature ZK node at path: /feature does not exist (kafka.server.FinalizedFeatureChangeListener)
[2021-05-10 14:17:35,457] INFO Cleared cache (kafka.server.FinalizedFeatureCache)
[2021-05-10 14:17:36,213] INFO Cluster ID = amutkB48RcCbNccRQjgW3g (kafka.server.KafkaServer)
[2021-05-10 14:17:36,225] WARN No meta.properties file under dir /tmp/kafka-logs/meta.properties (kafka.server.BrokerMetadataCheckpoint)
[2021-05-10 14:17:36,521] INFO KafkaConfig values: 
	advertised.host.name = null
	advertised.listeners = null
	advertised.port = null
	alter.config.policy.class.name = null
	alter.log.dirs.replication.quota.window.num = 11
	alter.log.dirs.replication.quota.window.size.seconds = 1
	authorizer.class.name = 
	auto.create.topics.enable = true
	auto.leader.rebalance.enable = true
	background.threads = 10
	broker.heartbeat.interval.ms = 2000
	broker.id = 0
	broker.id.generation.enable = true
	broker.rack = null
	broker.session.timeout.ms = 9000
	client.quota.callback.class = null
	compression.type = producer
	connection.failed.authentication.delay.ms = 100
	connections.max.idle.ms = 600000
	connections.max.reauth.ms = 0
	control.plane.listener.name = null
	controlled.shutdown.enable = true
	controlled.shutdown.max.retries = 3
	controlled.shutdown.retry.backoff.ms = 5000
	controller.listener.names = null
	controller.quorum.append.linger.ms = 25
	controller.quorum.election.backoff.max.ms = 1000
	controller.quorum.election.timeout.ms = 1000
	controller.quorum.fetch.timeout.ms = 2000
	controller.quorum.request.timeout.ms = 2000
	controller.quorum.retry.backoff.ms = 20
	controller.quorum.voters = []
	controller.quota.window.num = 11
	controller.quota.window.size.seconds = 1
	controller.socket.timeout.ms = 30000
	create.topic.policy.class.name = null
	default.replication.factor = 1
	delegation.token.expiry.check.interval.ms = 3600000
	delegation.token.expiry.time.ms = 86400000
	delegation.token.master.key = null
	delegation.token.max.lifetime.ms = 604800000
	delegation.token.secret.key = null
	delete.records.purgatory.purge.interval.requests = 1
	delete.topic.enable = true
	fetch.max.bytes = 57671680
	fetch.purgatory.purge.interval.requests = 1000
	group.initial.rebalance.delay.ms = 0
	group.max.session.timeout.ms = 1800000
	group.max.size = 2147483647
	group.min.session.timeout.ms = 6000
	host.name = 
	initial.broker.registration.timeout.ms = 60000
	inter.broker.listener.name = null
	inter.broker.protocol.version = 2.8-IV1
	kafka.metrics.polling.interval.secs = 10
	kafka.metrics.reporters = []
	leader.imbalance.check.interval.seconds = 300
	leader.imbalance.per.broker.percentage = 10
	listener.security.protocol.map = PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
	listeners = null
	log.cleaner.backoff.ms = 15000
	log.cleaner.dedupe.buffer.size = 134217728
	log.cleaner.delete.retention.ms = 86400000
	log.cleaner.enable = true
	log.cleaner.io.buffer.load.factor = 0.9
	log.cleaner.io.buffer.size = 524288
	log.cleaner.io.max.bytes.per.second = 1.7976931348623157E308
	log.cleaner.max.compaction.lag.ms = 9223372036854775807
	log.cleaner.min.cleanable.ratio = 0.5
	log.cleaner.min.compaction.lag.ms = 0
	log.cleaner.threads = 1
	log.cleanup.policy = [delete]
	log.dir = /tmp/kafka-logs
	log.dirs = /tmp/kafka-logs
	log.flush.interval.messages = 9223372036854775807
	log.flush.interval.ms = null
	log.flush.offset.checkpoint.interval.ms = 60000
	log.flush.scheduler.interval.ms = 9223372036854775807
	log.flush.start.offset.checkpoint.interval.ms = 60000
	log.index.interval.bytes = 4096
	log.index.size.max.bytes = 10485760
	log.message.downconversion.enable = true
	log.message.format.version = 2.8-IV1
	log.message.timestamp.difference.max.ms = 9223372036854775807
	log.message.timestamp.type = CreateTime
	log.preallocate = false
	log.retention.bytes = -1
	log.retention.check.interval.ms = 300000
	log.retention.hours = 168
	log.retention.minutes = null
	log.retention.ms = null
	log.roll.hours = 168
	log.roll.jitter.hours = 0
	log.roll.jitter.ms = null
	log.roll.ms = null
	log.segment.bytes = 1073741824
	log.segment.delete.delay.ms = 60000
	max.connection.creation.rate = 2147483647
	max.connections = 2147483647
	max.connections.per.ip = 2147483647
	max.connections.per.ip.overrides = 
	max.incremental.fetch.session.cache.slots = 1000
	message.max.bytes = 1048588
	metadata.log.dir = null
	metric.reporters = []
	metrics.num.samples = 2
	metrics.recording.level = INFO
	metrics.sample.window.ms = 30000
	min.insync.replicas = 1
	node.id = -1
	num.io.threads = 8
	num.network.threads = 3
	num.partitions = 1
	num.recovery.threads.per.data.dir = 1
	num.replica.alter.log.dirs.threads = null
	num.replica.fetchers = 1
	offset.metadata.max.bytes = 4096
	offsets.commit.required.acks = -1
	offsets.commit.timeout.ms = 5000
	offsets.load.buffer.size = 5242880
	offsets.retention.check.interval.ms = 600000
	offsets.retention.minutes = 10080
	offsets.topic.compression.codec = 0
	offsets.topic.num.partitions = 50
	offsets.topic.replication.factor = 1
	offsets.topic.segment.bytes = 104857600
	password.encoder.cipher.algorithm = AES/CBC/PKCS5Padding
	password.encoder.iterations = 4096
	password.encoder.key.length = 128
	password.encoder.keyfactory.algorithm = null
	password.encoder.old.secret = null
	password.encoder.secret = null
	port = 9092
	principal.builder.class = null
	process.roles = []
	producer.purgatory.purge.interval.requests = 1000
	queued.max.request.bytes = -1
	queued.max.requests = 500
	quota.consumer.default = 9223372036854775807
	quota.producer.default = 9223372036854775807
	quota.window.num = 11
	quota.window.size.seconds = 1
	replica.fetch.backoff.ms = 1000
	replica.fetch.max.bytes = 1048576
	replica.fetch.min.bytes = 1
	replica.fetch.response.max.bytes = 10485760
	replica.fetch.wait.max.ms = 500
	replica.high.watermark.checkpoint.interval.ms = 5000
	replica.lag.time.max.ms = 30000
	replica.selector.class = null
	replica.socket.receive.buffer.bytes = 65536
	replica.socket.timeout.ms = 30000
	replication.quota.window.num = 11
	replication.quota.window.size.seconds = 1
	request.timeout.ms = 30000
	reserved.broker.max.id = 1000
	sasl.client.callback.handler.class = null
	sasl.enabled.mechanisms = [GSSAPI]
	sasl.jaas.config = null
	sasl.kerberos.kinit.cmd = /usr/bin/kinit
	sasl.kerberos.min.time.before.relogin = 60000
	sasl.kerberos.principal.to.local.rules = [DEFAULT]
	sasl.kerberos.service.name = null
	sasl.kerberos.ticket.renew.jitter = 0.05
	sasl.kerberos.ticket.renew.window.factor = 0.8
	sasl.login.callback.handler.class = null
	sasl.login.class = null
	sasl.login.refresh.buffer.seconds = 300
	sasl.login.refresh.min.period.seconds = 60
	sasl.login.refresh.window.factor = 0.8
	sasl.login.refresh.window.jitter = 0.05
	sasl.mechanism.controller.protocol = GSSAPI
	sasl.mechanism.inter.broker.protocol = GSSAPI
	sasl.server.callback.handler.class = null
	security.inter.broker.protocol = PLAINTEXT
	security.providers = null
	socket.connection.setup.timeout.max.ms = 30000
	socket.connection.setup.timeout.ms = 10000
	socket.receive.buffer.bytes = 102400
	socket.request.max.bytes = 104857600
	socket.send.buffer.bytes = 102400
	ssl.cipher.suites = []
	ssl.client.auth = none
	ssl.enabled.protocols = [TLSv1.2]
	ssl.endpoint.identification.algorithm = https
	ssl.engine.factory.class = null
	ssl.key.password = null
	ssl.keymanager.algorithm = SunX509
	ssl.keystore.certificate.chain = null
	ssl.keystore.key = null
	ssl.keystore.location = null
	ssl.keystore.password = null
	ssl.keystore.type = JKS
	ssl.principal.mapping.rules = DEFAULT
	ssl.protocol = TLSv1.2
	ssl.provider = null
	ssl.secure.random.implementation = null
	ssl.trustmanager.algorithm = PKIX
	ssl.truststore.certificates = null
	ssl.truststore.location = null
	ssl.truststore.password = null
	ssl.truststore.type = JKS
	transaction.abort.timed.out.transaction.cleanup.interval.ms = 10000
	transaction.max.timeout.ms = 900000
	transaction.remove.expired.transaction.cleanup.interval.ms = 3600000
	transaction.state.log.load.buffer.size = 5242880
	transaction.state.log.min.isr = 1
	transaction.state.log.num.partitions = 50
	transaction.state.log.replication.factor = 1
	transaction.state.log.segment.bytes = 104857600
	transactional.id.expiration.ms = 604800000
	unclean.leader.election.enable = false
	zookeeper.clientCnxnSocket = null
	zookeeper.connect = localhost:2181
	zookeeper.connection.timeout.ms = 18000
	zookeeper.max.in.flight.requests = 10
	zookeeper.session.timeout.ms = 18000
	zookeeper.set.acl = false
	zookeeper.ssl.cipher.suites = null
	zookeeper.ssl.client.enable = false
	zookeeper.ssl.crl.enable = false
	zookeeper.ssl.enabled.protocols = null
	zookeeper.ssl.endpoint.identification.algorithm = HTTPS
	zookeeper.ssl.keystore.location = null
	zookeeper.ssl.keystore.password = null
	zookeeper.ssl.keystore.type = null
	zookeeper.ssl.ocsp.enable = false
	zookeeper.ssl.protocol = TLSv1.2
	zookeeper.ssl.truststore.location = null
	zookeeper.ssl.truststore.password = null
	zookeeper.ssl.truststore.type = null
	zookeeper.sync.time.ms = 2000
 (kafka.server.KafkaConfig)
[2021-05-10 14:17:36,552] INFO KafkaConfig values: 
	advertised.host.name = null
	advertised.listeners = null
	advertised.port = null
	alter.config.policy.class.name = null
	alter.log.dirs.replication.quota.window.num = 11
	alter.log.dirs.replication.quota.window.size.seconds = 1
	authorizer.class.name = 
	auto.create.topics.enable = true
	auto.leader.rebalance.enable = true
	background.threads = 10
	broker.heartbeat.interval.ms = 2000
	broker.id = 0
	broker.id.generation.enable = true
	broker.rack = null
	broker.session.timeout.ms = 9000
	client.quota.callback.class = null
	compression.type = producer
	connection.failed.authentication.delay.ms = 100
	connections.max.idle.ms = 600000
	connections.max.reauth.ms = 0
	control.plane.listener.name = null
	controlled.shutdown.enable = true
	controlled.shutdown.max.retries = 3
	controlled.shutdown.retry.backoff.ms = 5000
	controller.listener.names = null
	controller.quorum.append.linger.ms = 25
	controller.quorum.election.backoff.max.ms = 1000
	controller.quorum.election.timeout.ms = 1000
	controller.quorum.fetch.timeout.ms = 2000
	controller.quorum.request.timeout.ms = 2000
	controller.quorum.retry.backoff.ms = 20
	controller.quorum.voters = []
	controller.quota.window.num = 11
	controller.quota.window.size.seconds = 1
	controller.socket.timeout.ms = 30000
	create.topic.policy.class.name = null
	default.replication.factor = 1
	delegation.token.expiry.check.interval.ms = 3600000
	delegation.token.expiry.time.ms = 86400000
	delegation.token.master.key = null
	delegation.token.max.lifetime.ms = 604800000
	delegation.token.secret.key = null
	delete.records.purgatory.purge.interval.requests = 1
	delete.topic.enable = true
	fetch.max.bytes = 57671680
	fetch.purgatory.purge.interval.requests = 1000
	group.initial.rebalance.delay.ms = 0
	group.max.session.timeout.ms = 1800000
	group.max.size = 2147483647
	group.min.session.timeout.ms = 6000
	host.name = 
	initial.broker.registration.timeout.ms = 60000
	inter.broker.listener.name = null
	inter.broker.protocol.version = 2.8-IV1
	kafka.metrics.polling.interval.secs = 10
	kafka.metrics.reporters = []
	leader.imbalance.check.interval.seconds = 300
	leader.imbalance.per.broker.percentage = 10
	listener.security.protocol.map = PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
	listeners = null
	log.cleaner.backoff.ms = 15000
	log.cleaner.dedupe.buffer.size = 134217728
	log.cleaner.delete.retention.ms = 86400000
	log.cleaner.enable = true
	log.cleaner.io.buffer.load.factor = 0.9
	log.cleaner.io.buffer.size = 524288
	log.cleaner.io.max.bytes.per.second = 1.7976931348623157E308
	log.cleaner.max.compaction.lag.ms = 9223372036854775807
	log.cleaner.min.cleanable.ratio = 0.5
	log.cleaner.min.compaction.lag.ms = 0
	log.cleaner.threads = 1
	log.cleanup.policy = [delete]
	log.dir = /tmp/kafka-logs
	log.dirs = /tmp/kafka-logs
	log.flush.interval.messages = 9223372036854775807
	log.flush.interval.ms = null
	log.flush.offset.checkpoint.interval.ms = 60000
	log.flush.scheduler.interval.ms = 9223372036854775807
	log.flush.start.offset.checkpoint.interval.ms = 60000
	log.index.interval.bytes = 4096
	log.index.size.max.bytes = 10485760
	log.message.downconversion.enable = true
	log.message.format.version = 2.8-IV1
	log.message.timestamp.difference.max.ms = 9223372036854775807
	log.message.timestamp.type = CreateTime
	log.preallocate = false
	log.retention.bytes = -1
	log.retention.check.interval.ms = 300000
	log.retention.hours = 168
	log.retention.minutes = null
	log.retention.ms = null
	log.roll.hours = 168
	log.roll.jitter.hours = 0
	log.roll.jitter.ms = null
	log.roll.ms = null
	log.segment.bytes = 1073741824
	log.segment.delete.delay.ms = 60000
	max.connection.creation.rate = 2147483647
	max.connections = 2147483647
	max.connections.per.ip = 2147483647
	max.connections.per.ip.overrides = 
	max.incremental.fetch.session.cache.slots = 1000
	message.max.bytes = 1048588
	metadata.log.dir = null
	metric.reporters = []
	metrics.num.samples = 2
	metrics.recording.level = INFO
	metrics.sample.window.ms = 30000
	min.insync.replicas = 1
	node.id = -1
	num.io.threads = 8
	num.network.threads = 3
	num.partitions = 1
	num.recovery.threads.per.data.dir = 1
	num.replica.alter.log.dirs.threads = null
	num.replica.fetchers = 1
	offset.metadata.max.bytes = 4096
	offsets.commit.required.acks = -1
	offsets.commit.timeout.ms = 5000
	offsets.load.buffer.size = 5242880
	offsets.retention.check.interval.ms = 600000
	offsets.retention.minutes = 10080
	offsets.topic.compression.codec = 0
	offsets.topic.num.partitions = 50
	offsets.topic.replication.factor = 1
	offsets.topic.segment.bytes = 104857600
	password.encoder.cipher.algorithm = AES/CBC/PKCS5Padding
	password.encoder.iterations = 4096
	password.encoder.key.length = 128
	password.encoder.keyfactory.algorithm = null
	password.encoder.old.secret = null
	password.encoder.secret = null
	port = 9092
	principal.builder.class = null
	process.roles = []
	producer.purgatory.purge.interval.requests = 1000
	queued.max.request.bytes = -1
	queued.max.requests = 500
	quota.consumer.default = 9223372036854775807
	quota.producer.default = 9223372036854775807
	quota.window.num = 11
	quota.window.size.seconds = 1
	replica.fetch.backoff.ms = 1000
	replica.fetch.max.bytes = 1048576
	replica.fetch.min.bytes = 1
	replica.fetch.response.max.bytes = 10485760
	replica.fetch.wait.max.ms = 500
	replica.high.watermark.checkpoint.interval.ms = 5000
	replica.lag.time.max.ms = 30000
	replica.selector.class = null
	replica.socket.receive.buffer.bytes = 65536
	replica.socket.timeout.ms = 30000
	replication.quota.window.num = 11
	replication.quota.window.size.seconds = 1
	request.timeout.ms = 30000
	reserved.broker.max.id = 1000
	sasl.client.callback.handler.class = null
	sasl.enabled.mechanisms = [GSSAPI]
	sasl.jaas.config = null
	sasl.kerberos.kinit.cmd = /usr/bin/kinit
	sasl.kerberos.min.time.before.relogin = 60000
	sasl.kerberos.principal.to.local.rules = [DEFAULT]
	sasl.kerberos.service.name = null
	sasl.kerberos.ticket.renew.jitter = 0.05
	sasl.kerberos.ticket.renew.window.factor = 0.8
	sasl.login.callback.handler.class = null
	sasl.login.class = null
	sasl.login.refresh.buffer.seconds = 300
	sasl.login.refresh.min.period.seconds = 60
	sasl.login.refresh.window.factor = 0.8
	sasl.login.refresh.window.jitter = 0.05
	sasl.mechanism.controller.protocol = GSSAPI
	sasl.mechanism.inter.broker.protocol = GSSAPI
	sasl.server.callback.handler.class = null
	security.inter.broker.protocol = PLAINTEXT
	security.providers = null
	socket.connection.setup.timeout.max.ms = 30000
	socket.connection.setup.timeout.ms = 10000
	socket.receive.buffer.bytes = 102400
	socket.request.max.bytes = 104857600
	socket.send.buffer.bytes = 102400
	ssl.cipher.suites = []
	ssl.client.auth = none
	ssl.enabled.protocols = [TLSv1.2]
	ssl.endpoint.identification.algorithm = https
	ssl.engine.factory.class = null
	ssl.key.password = null
	ssl.keymanager.algorithm = SunX509
	ssl.keystore.certificate.chain = null
	ssl.keystore.key = null
	ssl.keystore.location = null
	ssl.keystore.password = null
	ssl.keystore.type = JKS
	ssl.principal.mapping.rules = DEFAULT
	ssl.protocol = TLSv1.2
	ssl.provider = null
	ssl.secure.random.implementation = null
	ssl.trustmanager.algorithm = PKIX
	ssl.truststore.certificates = null
	ssl.truststore.location = null
	ssl.truststore.password = null
	ssl.truststore.type = JKS
	transaction.abort.timed.out.transaction.cleanup.interval.ms = 10000
	transaction.max.timeout.ms = 900000
	transaction.remove.expired.transaction.cleanup.interval.ms = 3600000
	transaction.state.log.load.buffer.size = 5242880
	transaction.state.log.min.isr = 1
	transaction.state.log.num.partitions = 50
	transaction.state.log.replication.factor = 1
	transaction.state.log.segment.bytes = 104857600
	transactional.id.expiration.ms = 604800000
	unclean.leader.election.enable = false
	zookeeper.clientCnxnSocket = null
	zookeeper.connect = localhost:2181
	zookeeper.connection.timeout.ms = 18000
	zookeeper.max.in.flight.requests = 10
	zookeeper.session.timeout.ms = 18000
	zookeeper.set.acl = false
	zookeeper.ssl.cipher.suites = null
	zookeeper.ssl.client.enable = false
	zookeeper.ssl.crl.enable = false
	zookeeper.ssl.enabled.protocols = null
	zookeeper.ssl.endpoint.identification.algorithm = HTTPS
	zookeeper.ssl.keystore.location = null
	zookeeper.ssl.keystore.password = null
	zookeeper.ssl.keystore.type = null
	zookeeper.ssl.ocsp.enable = false
	zookeeper.ssl.protocol = TLSv1.2
	zookeeper.ssl.truststore.location = null
	zookeeper.ssl.truststore.password = null
	zookeeper.ssl.truststore.type = null
	zookeeper.sync.time.ms = 2000
 (kafka.server.KafkaConfig)
[2021-05-10 14:17:37,429] INFO [ThrottledChannelReaper-Fetch]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,431] INFO [ThrottledChannelReaper-Produce]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,436] INFO [ThrottledChannelReaper-Request]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,441] INFO [ThrottledChannelReaper-ControllerMutation]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2021-05-10 14:17:37,515] INFO Log directory /tmp/kafka-logs not found, creating it. (kafka.log.LogManager)
[2021-05-10 14:17:38,257] INFO Loading logs from log dirs ArrayBuffer(/tmp/kafka-logs) (kafka.log.LogManager)
[2021-05-10 14:17:38,415] INFO Attempting recovery for all logs in /tmp/kafka-logs since no clean shutdown file was found (kafka.log.LogManager)
[2021-05-10 14:17:38,941] INFO Loaded 0 logs in 658ms. (kafka.log.LogManager)
[2021-05-10 14:17:38,945] INFO Starting log cleanup with a period of 300000 ms. (kafka.log.LogManager)
[2021-05-10 14:17:38,964] INFO Starting log flusher with a default period of 9223372036854775807 ms. (kafka.log.LogManager)
[2021-05-10 14:17:46,163] INFO Updated connection-accept-rate max connection creation rate to 2147483647 (kafka.network.ConnectionQuotas)
[2021-05-10 14:17:46,337] INFO Awaiting socket connections on 0.0.0.0:9092. (kafka.network.Acceptor)
[2021-05-10 14:17:47,115] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Created data-plane acceptor and processors for endpoint : ListenerName(PLAINTEXT) (kafka.network.SocketServer)
[2021-05-10 14:17:47,786] INFO [broker-0-to-controller-send-thread]: Starting (kafka.server.BrokerToControllerRequestThread)
[2021-05-10 14:17:48,320] INFO [ExpirationReaper-0-Produce]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,327] INFO [ExpirationReaper-0-Fetch]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,330] INFO [ExpirationReaper-0-DeleteRecords]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,333] INFO [ExpirationReaper-0-ElectLeader]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:48,466] INFO [LogDirFailureHandler]: Starting (kafka.server.ReplicaManager$LogDirFailureHandler)
[2021-05-10 14:17:48,922] INFO Creating /brokers/ids/0 (is it secure? false) (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,027] INFO Stat of the created znode at /brokers/ids/0 is: 25,25,1620636468991,1620636468991,1,0,0,72057745608736768,202,0,25
 (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,030] INFO Registered broker 0 at path /brokers/ids/0 with addresses: PLAINTEXT://localhost:9092, czxid (broker epoch): 25 (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,383] INFO [ExpirationReaper-0-topic]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:49,391] INFO Successfully created /controller_epoch with initial epoch 0 (kafka.zk.KafkaZkClient)
[2021-05-10 14:17:49,423] INFO [ExpirationReaper-0-Heartbeat]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:49,425] INFO [ExpirationReaper-0-Rebalance]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:49,567] INFO Feature ZK node created at path: /feature (kafka.server.FinalizedFeatureChangeListener)
[2021-05-10 14:17:49,652] INFO [GroupCoordinator 0]: Starting up. (kafka.coordinator.group.GroupCoordinator)
[2021-05-10 14:17:49,660] INFO Updated cache from existing  to latest FinalizedFeaturesAndEpoch(features=Features{}, epoch=0). (kafka.server.FinalizedFeatureCache)
[2021-05-10 14:17:49,682] INFO [GroupCoordinator 0]: Startup complete. (kafka.coordinator.group.GroupCoordinator)
[2021-05-10 14:17:50,362] INFO [ProducerId Manager 0]: Acquired new producerId block (brokerId:0,blockStartProducerId:0,blockEndProducerId:999) by writing to Zk with path version 1 (kafka.coordinator.transaction.ProducerIdManager)
[2021-05-10 14:17:50,363] INFO [TransactionCoordinator id=0] Starting up. (kafka.coordinator.transaction.TransactionCoordinator)
[2021-05-10 14:17:50,388] INFO [Transaction Marker Channel Manager 0]: Starting (kafka.coordinator.transaction.TransactionMarkerChannelManager)
[2021-05-10 14:17:50,390] INFO [TransactionCoordinator id=0] Startup complete. (kafka.coordinator.transaction.TransactionCoordinator)
[2021-05-10 14:17:51,027] INFO [ExpirationReaper-0-AlterAcls]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:51,192] INFO [/config/changes-event-process-thread]: Starting (kafka.common.ZkNodeChangeNotificationListener$ChangeEventProcessThread)
[2021-05-10 14:17:51,247] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Starting socket server acceptors and processors (kafka.network.SocketServer)
[2021-05-10 14:17:51,293] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Started data-plane acceptor and processor(s) for endpoint : ListenerName(PLAINTEXT) (kafka.network.SocketServer)
[2021-05-10 14:17:51,294] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Started socket server acceptors and processors (kafka.network.SocketServer)
[2021-05-10 14:17:51,495] INFO Kafka version: 2.8.0 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,495] INFO Kafka commitId: ebb1d6e21cc92130 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,495] INFO Kafka startTimeMs: 1620636471294 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,505] INFO [KafkaServer id=0] started (kafka.server.KafkaServer)
[2021-05-10 14:17:51,520] INFO [broker-0-to-controller-send-thread]: Recorded new controller, from now on will use broker localhost:9092 (id: 0 rack: null) (kafka.server.BrokerToControllerRequestThread)

2.5 Simple Producer

Apache Kafka Producer API has Producer class which helps to connect to Kafka server. The class has send method to send messages to more than one topic. Sync and Async are different types of producers. Sync Producer sends the messages immediately. Async</code. Producer sends the messages in the background. Async is used for processing higher volume. From release 0.9, Async producer has call back for send method. Call back is used for error handler registration.

The Configuration settings for Producer API are attached below

Configuration SettingsDescription
client.idThis setting identifies producer application
producer.typeThis value can be either sync or async
acksThis controls the criteria under producer requests are considered complete.
retriesThis is the number of retires. If producer request fails, then automatically retry with specific value.
bootstrap.serversThis has the bootstrapping list of brokers
linger.msThis setting adds a delay to wait for more records to build up
key.serializerThis is the Key for the serializer interface.
value.serializerThis is the value for the serializer interface.
batch.sizethis is the Buffer size.
buffer.memoryThis controls the total amount of memory available to the producer for buffering
Configuration Settings

ProducerRecord class is used for record creation. The record has the topic name, partition count key and value pair. Below is the code for the sample producer to create and topic and send the message.Apache Kafka Producer Example

import java.util.Properties;


import org.apache.kafka.clients.producer.Producer;

import org.apache.kafka.clients.producer.KafkaProducer;

import org.apache.kafka.clients.producer.ProducerRecord;

public class SimpleProducerExample {
   
   public static void main(String[] args) throws Exception{
      
 
      if(args.length == 0){
         System.out.println("Enter the topic to be created ");
         return;
      }
      
      
      String exampleTopicName = args[0].toString();
      
  
      Properties properties = new Properties();
      
      properties.put("bootstrap.servers", "localhost:9092");
      
      properties.put("acks", "all");
      
      properties.put("retries", 0);
      
      properties.put("batch.size", 16384);
      
      properties.put("linger.ms", 1);
      
      properties.put("buffer.memory", 33554432);
      
      properties.put("key.serializer", 
         "org.apache.kafka.common.serialization.StringSerializer");
         
      properties.put("value.serializer", 
         "org.apache.kafka.common.serialization.StringSerializer");
      
      Producer producer = new KafkaProducer
         (properties);
            
      for(int i = 0; i < 10; i++)
         producer.send(new ProducerRecord(exampleTopicName, 
            Integer.toString(i), Integer.toString(i)));
               System.out.println("Message is sent");
               producer.close();
   }
}

The command to compile the above code is shown below:Apache Kafka Producer Compilation Command

javac -cp "/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/libs/*" SimpleProducerExample.java

The output of the above command is shown as below:Apache Kafka Producer Compilation Output

apples-MacBook-Air:apachekafkaproducer bhagvan.kommadi$ javac -cp "/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/libs/*" SimpleProducerExample.java
apples-MacBook-Air:apachekafkaproducer bhagvan.kommadi$

The command for executing the sample producer is shown below:Apache Kafka Producer Execution Command

java -cp "/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/libs/*:." SimpleProducerExample ExampleTopic 

The output of the above command is shown as below:Apache Kafka Producer Execution Output

apples-MacBook-Air:apachekafkaproducer bhagvan.kommadi$ java -cp "/Users/bhagvan.kommadi/desktop/kafka_2.12-2.8.0/libs/*:." SimpleProducerExample ExampleTopic
Message is sent

The output of the kafka server showing the example topic created is shown below:Apache Kafka Server Output

[2021-05-10 14:17:49,682] INFO [GroupCoordinator 0]: Startup complete. (kafka.coordinator.group.GroupCoordinator)
[2021-05-10 14:17:50,362] INFO [ProducerId Manager 0]: Acquired new producerId block (brokerId:0,blockStartProducerId:0,blockEndProducerId:999) by writing to Zk with path version 1 (kafka.coordinator.transaction.ProducerIdManager)
[2021-05-10 14:17:50,363] INFO [TransactionCoordinator id=0] Starting up. (kafka.coordinator.transaction.TransactionCoordinator)
[2021-05-10 14:17:50,388] INFO [Transaction Marker Channel Manager 0]: Starting (kafka.coordinator.transaction.TransactionMarkerChannelManager)
[2021-05-10 14:17:50,390] INFO [TransactionCoordinator id=0] Startup complete. (kafka.coordinator.transaction.TransactionCoordinator)
[2021-05-10 14:17:51,027] INFO [ExpirationReaper-0-AlterAcls]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2021-05-10 14:17:51,192] INFO [/config/changes-event-process-thread]: Starting (kafka.common.ZkNodeChangeNotificationListener$ChangeEventProcessThread)
[2021-05-10 14:17:51,247] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Starting socket server acceptors and processors (kafka.network.SocketServer)
[2021-05-10 14:17:51,293] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Started data-plane acceptor and processor(s) for endpoint : ListenerName(PLAINTEXT) (kafka.network.SocketServer)
[2021-05-10 14:17:51,294] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Started socket server acceptors and processors (kafka.network.SocketServer)
[2021-05-10 14:17:51,495] INFO Kafka version: 2.8.0 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,495] INFO Kafka commitId: ebb1d6e21cc92130 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,495] INFO Kafka startTimeMs: 1620636471294 (org.apache.kafka.common.utils.AppInfoParser)
[2021-05-10 14:17:51,505] INFO [KafkaServer id=0] started (kafka.server.KafkaServer)
[2021-05-10 14:17:51,520] INFO [broker-0-to-controller-send-thread]: Recorded new controller, from now on will use broker localhost:9092 (id: 0 rack: null) (kafka.server.BrokerToControllerRequestThread)
[2021-05-10 14:29:38,738] INFO Creating topic ExampleTopic with configuration {} and initial partition assignment Map(0 -> ArrayBuffer(0)) (kafka.zk.AdminZkClient)
[2021-05-10 14:29:39,261] INFO [ReplicaFetcherManager on broker 0] Removed fetcher for partitions Set(ExampleTopic-0) (kafka.server.ReplicaFetcherManager)
[2021-05-10 14:29:39,448] INFO [Log partition=ExampleTopic-0, dir=/tmp/kafka-logs] Loading producer state till offset 0 with message format version 2 (kafka.log.Log)
[2021-05-10 14:29:39,454] INFO Created log for partition ExampleTopic-0 in /tmp/kafka-logs/ExampleTopic-0 with properties {compression.type -> producer, message.downconversion.enable -> true, min.insync.replicas -> 1, segment.jitter.ms -> 0, cleanup.policy -> [delete], flush.ms -> 9223372036854775807, segment.bytes -> 1073741824, retention.ms -> 604800000, flush.messages -> 9223372036854775807, message.format.version -> 2.8-IV1, file.delete.delay.ms -> 60000, max.compaction.lag.ms -> 9223372036854775807, max.message.bytes -> 1048588, min.compaction.lag.ms -> 0, message.timestamp.type -> CreateTime, preallocate -> false, min.cleanable.dirty.ratio -> 0.5, index.interval.bytes -> 4096, unclean.leader.election.enable -> false, retention.bytes -> -1, delete.retention.ms -> 86400000, segment.ms -> 604800000, message.timestamp.difference.max.ms -> 9223372036854775807, segment.index.bytes -> 10485760}. (kafka.log.LogManager)
[2021-05-10 14:29:39,456] INFO [Partition ExampleTopic-0 broker=0] No checkpointed highwatermark is found for partition ExampleTopic-0 (kafka.cluster.Partition)
[2021-05-10 14:29:39,458] INFO [Partition ExampleTopic-0 broker=0] Log loaded for partition ExampleTopic-0 with initial high watermark 0 (kafka.cluster.Partition)

3. Download the Source Code

Download
You can download the full source code of this example here: Apache Kafka Simple Producer Example

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