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https://issues.apache.org/jira/browse/HDFS-11143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15697278#comment-15697278
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Allen Wittenauer commented on HDFS-11143:
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It's important to recognize that the shell scripts can only tell if something
failed under very specific circumstances due to the way the code works inside
Java. There are still many cases where a process like the NN will return
success on launch but still fail later. So just because the shell code would
report that it is running doesn't necessarily mean that it is.
> start-dfs.sh doesn't return any error message even namenode is not up.
> ----------------------------------------------------------------------
>
> Key: HDFS-11143
> URL: https://issues.apache.org/jira/browse/HDFS-11143
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Yufei Gu
>
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