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https://issues.apache.org/jira/browse/HDFS-16094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17528382#comment-17528382
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Renukaprasad C commented on HDFS-16094:
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Similar issue HDFS-15932 has been addressed. [~Daniel Ma] please check if any
other information to be added.
> HDFS balancer process start failed owing to daemon pid file is not cleared in
> some exception senario
> ----------------------------------------------------------------------------------------------------
>
> Key: HDFS-16094
> URL: https://issues.apache.org/jira/browse/HDFS-16094
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 3.3.1
> Reporter: Daniel Ma
> Priority: Major
>
> HDFS balancer process start failed owing to daemon pid file is not cleared in
> some exception senario, but there is no useful information in log to trouble
> shoot as below.
> {code:java}
> //代码占位符
> hadoop_error "${daemonname} is running as process $(cat "${daemon_pidfile}")
> {code}
> but actually, the process is not running as the error msg details above.
> Therefore, some more explicit information should be print in error log to
> guide users to clear the pid file and where the pid file location is.
>
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