实现HadooopHA中的问题：

最新推荐文章于 2023-10-04 20:01:59 发布

原创最新推荐文章于 2023-10-04 20:01:59 发布 · 365 阅读

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#hadoop HA报错解决

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在尝试实现Hadoop HA过程中，遇到了datanode动态添加时报错，显示无法连接到服务器hadoop01:9000。错误信息表明连接被拒绝。经过排查，发现是由于clusterID不一致导致的问题。解决方法是删除datanode节点上hadoop/tmp文件，以确保clusterID的一致性。

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19/05/27 08:08:39 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
19/05/27 08:08:39 INFO namenode.NameNode: createNameNode [-bootstrapStandby]
19/05/27 08:08:42 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:43 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:44 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:45 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:46 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:47 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:48 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:49 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:50 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:51 INFO ipc.Client: Retrying connect to server: hadoop01/192.168.100.12:9000. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
19/05/27 08:08:51 FATAL ha.BootstrapStandby: Unable to fetch namespace information from active NN at hadoop01/192.168.100.12:9000: Call From hadoop02/192.168.100.13 to hadoop01:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
19/05/27 08:08:51 INFO util.ExitUtil: Exiting with status 2
19/05/27 08:08:51 INFO namenode.NameNode: SHUTDOWN_MSG:
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SHUTDOWN_MSG: Shutting down NameNode at hadoop02/192.168.100.13
************************************************************/