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https://issues.apache.org/jira/browse/HADOOP-15066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17572083#comment-17572083
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Sergey Shevchenko commented on HADOOP-15066:
--------------------------------------------
For some reason this fix for hadoop-functions.sh is missing from
apache-hadoop-3.3.3
> Spurious error stopping secure datanode
> ---------------------------------------
>
> Key: HADOOP-15066
> URL: https://issues.apache.org/jira/browse/HADOOP-15066
> Project: Hadoop Common
> Issue Type: Bug
> Components: scripts
> Affects Versions: 3.0.0
> Reporter: Arpit Agarwal
> Assignee: Bharat Viswanadham
> Priority: Major
> Attachments: HADOOP-15066.00.patch, HADOOP-15066.01.patch
>
>
> There is a spurious error when stopping a secure datanode.
> {code}
> # hdfs --daemon stop datanode
> cat: /var/run/hadoop/hdfs//hadoop-hdfs-root-datanode.pid: No such file or
> directory
> WARNING: pid has changed for datanode, skip deleting pid file
> cat: /var/run/hadoop/hdfs//hadoop-hdfs-root-datanode.pid: No such file or
> directory
> WARNING: daemon pid has changed for datanode, skip deleting daemon pid file
> {code}
> The error appears benign. The service was stopped correctly.
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