ConsumerConfig.scala 储存Consumer的配置 按照我的理解,0.10的Kafka没有专门的SimpleConsumer,仍然是沿用0.8版本的. 1.从poll开始 消费的规则如下: 一个partition只能被同一个ConsumersGroup的一个线程所消费. 线程数小于partition数,某些线程会消费多个partition. 线程数等于partition数,一个线程正好消费一个线程. 当添加消费者线程时,会触发rebalance,partition的分配发送变化…

15.如何消费内部topic: __consumer_offsets 主要是要让它来格式化:GroupMetadataManager.OffsetsMessageFormatter 最后用看了它的源码,把这部分挑选出来,自己解析了得到的byte[].核心代码如下: // com.sina.mis.app.ConsumerInnerTopic ConsumerRecords<byte[], byte[]> records = consumer.poll(512); for (ConsumerRe…

Kafka 0.10.1版本源码 Idea编译 1.环境准备 Jdk 1.8 Scala 2.11.12:下载scala-2.11.12.msi并配置环境变量 Gradle 5.6.4: 下载Gradle-5.6.4并配置环境变量 2.配置文件修改 -gradle.properties文件中          scalaVersion=2.10.6 修改为 scalaVersion=2.11.12 -gradle/dependencies.gradle文件(如果安装的是2.11.8就不用改):…

2.1 Producer API We encourage all new development to use the new Java producer. This client is production tested and generally both faster and more fully featured than the previous Scala client. You can use this client by adding a dependency on the c…

package cn.xiaojf.kafka.consumer; import org.apache.kafka.clients.consumer.ConsumerConfig; import org.apache.kafka.clients.consumer.ConsumerRecord; import org.apache.kafka.clients.consumer.ConsumerRecords; import org.apache.kafka.clients.consumer.Kaf…

1.Consumer优化:心跳线程可作为后台线程,提交offset,剥离出poll函数 问题:0.10新设计的consumer是单线程的,提交offset是在poll中.本次的poll调用,提交上次poll的心跳和offset值. The options for the user at the moment to handle this problem are the following: Increase the session timeout to give more time for re…

package cn.xiaojf.kafka.producer; import org.apache.kafka.clients.producer.*; import org.apache.kafka.common.Cluster; import org.apache.kafka.common.PartitionInfo; import org.apache.kafka.common.serialization.StringSerializer; import org.apache.kafka…

package cn.xiaojf.kafka.producer; import org.apache.kafka.clients.producer.KafkaProducer; import org.apache.kafka.clients.producer.Producer; import org.apache.kafka.clients.producer.ProducerRecord; import java.util.Properties; /** * Created by 肖建锋 on…

安装 zookeeper http://www.cnblogs.com/xiaojf/p/6572351.html安装 scala http://www.cnblogs.com/xiaojf/p/6568432.html [root@m1 jar]# -0.10.2.0.tgz -C ../ [root@m1 jar]# cd .. [root@m1 soft]# ll total drwxr-xr-x. root root Mar : jar drwxr-xr-x. uucp Dec : jd…

1.Producer 网络请求 1.1 Producer Client角度 KafkaProducer主要靠Sender来发送数据给Broker. Sender: 该线程handles the sending of produce requests to the Kafka cluster. 该线程发送metadata requests来更新它感知的整个集群的视图;另外,主要负责发送produce请求到相关的broker. Selector的主要目的是网络事件的 loop 循环,通过调用sele…