Flume-1.6.0学习笔记（六）kafka source

鲁春利的工作笔记，好记性不如烂笔头

Flume1.6.0增加了对kafka的完全支持：

Flume Sink and Source for Apache KafkaA new channel that uses Kafka

Kafka Source（http://flume.apache.org/FlumeUserGuide.html#kafka-source）

Kafka Source is an Apache Kafka consumer that reads messages from a Kafka topic.

If you have multiple Kafka sources running, you can configure them with the same Consumer Group so each will read a unique set of partitions for the topic.

File Channel（http://flume.apache.org/FlumeUserGuide.html#file-channel）

HBase Sink（http://flume.apache.org/FlumeUserGuide.html#hbasesink）

The type is the FQCN: org.apache.flume.sink.hbase.HBaseSink.

Kafka生成的topic为myhbase

[hadoop@nnode kafka0.8.2.1]$ bin/kafka-topics.sh --create --zookeeper nnode:2181,dnode1:2181,dnode2:2181 --replication-factor 1 --partitions 1 --topic myhbaseCreated topic "myhbase".[hadoop@nnode kafka0.8.2.1]$ bin/kafka-topics.sh --list --zookeeper nnode:2181,dnode1:2181,dnode2:2181myhbasemykafkamytopic - marked for deletiontest - marked for deletion[hadoop@nnode kafka0.8.2.1]$

HBase表结构

[hadoop@nnode kafka0.8.2.1]$ hbase shellHBase Shell; enter 'help' for list of supported commands.Type "exit" to leave the HBase ShellVersion 1.0.1, r66a93c09df3b12ff7b86c39bc8475c60e15af82d, Fri Apr 17 22:14:06 PDT 2015表名：t_inter_log列族：cf

Flume配置文件

vim conf/kafka-hbase.conf# read from kafka and write to hbaseagent.sources = kafka-sourceagent.channels = mem-channelagent.sinks = hbase-sink# sourceagent.sources.kafka-source.type = org.apache.flume.source.kafka.KafkaSourceagent.sources.kafka-source.zookeeperConnect = nnode:2181,dnode1:2181,dnode2:2181agent.sources.kafka-source.groupId = flumeagent.sources.kafka-source.topic = myhbaseagent.sources.kafka-source.kafka.consumer.timeout.ms = 100# channelagent.channels.mem-channel.type = memory# sinkagent.sinks.hbase-sink.type = hbaseagent.sinks.hbase-sink.table = t_inter_logagent.sinks.hbase-sink.columnFamily  = cf# agent.sinks.hbase-sink.serializer = org.apache.flume.sink.hbase.RegexHbaseEventSerializer# assembleagent.sources.kafka-source.channels = mem-channelagent.sinks.hbase-sink.channel = mem-channel

启动Kafka

[hadoop@nnode kafka0.8.2.1]# bin/kafka-server-start.sh config/server.properties

启动flume-ng

[hadoop@nnode flume1.6.0]$ bin/flume-ng agent --conf conf --name agent --conf-file conf/kafka-hbase.conf -Dflume.root.logger=INFO,console

通过Java Api实现producer

package com.lucl.kafka.simple;import java.util.Properties;import kafka.javaapi.producer.Producer;import kafka.producer.KeyedMessage;import kafka.producer.ProducerConfig;import org.apache.log4j.Logger;/** * 
 Copyright: Copyright (c) 2015 
 *  * 
 Date : 2015-11-17 21:42:50 
 *  * 
 Description : JavaApi for kafka producer 
 * * @author luchunli *  * @version 1.0 * */public class SimpleKafkaProducer {    private static final Logger logger = Logger.getLogger(SimpleKafkaProducer.class);    /**     *      */    private void execMsgSend() {        Properties props = new Properties();        props.put("metadata.broker.list", "192.168.137.117:9092");        props.put("serializer.class", "kafka.serializer.StringEncoder");        props.put("key.serializer.class", "kafka.serializer.StringEncoder");        props.put("request.required.acks", "0");                ProducerConfig config = new ProducerConfig(props);                 logger.info("set config info(" + config + ") ok.");                Producer procuder = new Producer<>(config);                String topic = "myhbase";                String columnFamily = "cf";        String column = "count";        for (int i = 1; i <= 10; i++) {            String rowkey = "www.value_" + i + ".com";            String value = "value_" + i;                        String event = rowkey + ", " + columnFamily + ":" + column + ", " + value;            logger.info(event);            KeyedMessage msg = new KeyedMessage(topic, event);            procuder.send(msg);        }        logger.info("send message over.");                    procuder.close();    }        /**     * @param args     */    public static void main(String[] args) {        SimpleKafkaProducer simpleProducer = new SimpleKafkaProducer();        simpleProducer.execMsgSend();    }}

观察Flume-ng控制台输出

2015-11-21 23:09:47,466 (flume_nnode-1448118584558-54f0a1ba-leader-finder-thread) [INFO - kafka.utils.Logging$class.info(Logging.scala:68)] [ConsumerFetcherManager-1448118585060] Added fetcher for partitions ArrayBuffer([[myhbase,0], initOffset 70 to broker id:117,host:nnode,port:9092] )2015-11-21 23:09:59,147 (lifecycleSupervisor-1-1) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.register(MonitoredCounterGroup.java:120)] Monitored counter group for type: SINK, name: hbase-sink: Successfully registered new MBean.2015-11-21 23:09:59,147 (lifecycleSupervisor-1-1) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.start(MonitoredCounterGroup.java:96)] Component type: SINK, name: hbase-sink started2015-11-21 23:15:30,702 (SinkRunner-PollingRunner-DefaultSinkProcessor) [ERROR - org.apache.flume.sink.hbase.HBaseSink.process(HBaseSink.java:351)] Failed to commit transaction.Transaction rolled back.java.lang.NoSuchMethodError: org.apache.hadoop.hbase.client.Put.setWriteToWAL(Z)V        at org.apache.flume.sink.hbase.HBaseSink$3.run(HBaseSink.java:377)        at org.apache.flume.sink.hbase.HBaseSink$3.run(HBaseSink.java:372)        at org.apache.flume.auth.SimpleAuthenticator.execute(SimpleAuthenticator.java:50)        at org.apache.flume.sink.hbase.HBaseSink.putEventsAndCommit(HBaseSink.java:372)        at org.apache.flume.sink.hbase.HBaseSink.process(HBaseSink.java:342)        at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)        at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)        at java.lang.Thread.run(Thread.java:745)2015-11-21 23:15:30,716 (SinkRunner-PollingRunner-DefaultSinkProcessor) [ERROR - org.apache.flume.sink.hbase.HBaseSink.process(HBaseSink.java:354)] Failed to commit transaction.Transaction rolled back.java.lang.NoSuchMethodError: org.apache.hadoop.hbase.client.Put.setWriteToWAL(Z)V        at org.apache.flume.sink.hbase.HBaseSink$3.run(HBaseSink.java:377)        at org.apache.flume.sink.hbase.HBaseSink$3.run(HBaseSink.java:372)        at org.apache.flume.auth.SimpleAuthenticator.execute(SimpleAuthenticator.java:50)        at org.apache.flume.sink.hbase.HBaseSink.putEventsAndCommit(HBaseSink.java:372)        at org.apache.flume.sink.hbase.HBaseSink.process(HBaseSink.java:342)        at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)        at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)        at java.lang.Thread.run(Thread.java:745)Exception in thread "SinkRunner-PollingRunner-DefaultSinkProcessor" java.lang.NoSuchMethodError: org.apache.hadoop.hbase.client.Put.setWriteToWAL(Z)V        at org.apache.flume.sink.hbase.HBaseSink$3.run(HBaseSink.java:377)        at org.apache.flume.sink.hbase.HBaseSink$3.run(HBaseSink.java:372)        at org.apache.flume.auth.SimpleAuthenticator.execute(SimpleAuthenticator.java:50)        at org.apache.flume.sink.hbase.HBaseSink.putEventsAndCommit(HBaseSink.java:372)        at org.apache.flume.sink.hbase.HBaseSink.process(HBaseSink.java:342)        at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)        at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)        at java.lang.Thread.run(Thread.java:745)^X^C2015-11-21 23:15:38,090 (agent-shutdown-hook) [INFO - org.apache.flume.lifecycle.LifecycleSupervisor.stop(LifecycleSupervisor.java:79)] Stopping lifecycle supervisor 102015-11-21 23:15:38,103 (PollableSourceRunner-KafkaSource-kafka-source) [INFO - org.apache.flume.source.PollableSourceRunner$PollingRunner.run(PollableSourceRunner.java:149)] Source runner interrupted. Exiting

写入失败。

查看HBase的表

hbase(main):004:0> scan 't_inter_log'ROW                                                COLUMN+CELL                                                                                                                                      0 row(s) in 0.0140 secondshbase(main):005:0>