Hadoop2.0之开启日志

配置

• 修改 mapred-site.xml

<property>
	<name>mapreduce.jobhistory.address</name>
	<value>slave1:10020</value>
</property>
<property>
	<name>mapreduce.jobhistory.webapp.address</name>
	<value>slave1:19888</value>
</property>

• 修改yarn-site.xml

<property>
	<name>yarn.log-aggregation-enable</name>
	<value>true</value>
</property>
<property>
	<name>yarn.log-aggregation.retain-seconds</name>
	<value>259200</value>
</property>
<property>
    <name>yarn.log.server.url</name>
    <value>http://slave1:19888/jobhistory/logs</value>
</property>

• 重启 yarn

• 启动 jobhistory server
  
  (配置在哪台，就在哪台机器启动)

[root@slave1 sbin]# ./mr-jobhistory-daemon.sh start historyserver

• 停止 jobhistory server

[root@slave1 sbin]# ./mr-jobhistory-daemon.sh stop historyserver

参考资料

【0】Hadoop - failed redirect for container

https://issues.apache.org/jira/browse/YARN-4037