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https://issues.apache.org/jira/browse/HDFS-1505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032607#comment-13032607
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Matt Foley commented on HDFS-1505:
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One more related issue: at the end of saveNamespace() it calls
"editLog.open()", which is implemented by FSEditLog.open(). This routine has
the same problem: if the list of EditLogOutputStream is empty, it appears to
succeed, but should throw an exception.
I would suggest fixing the lack of notification in FSEditLog.open(), but also
in your patch to saveNamespace() the check for empty IMAGE and EDITS lists
should precede the call to editLog.open().
> saveNamespace appears to succeed even if all directories fail to save
> ---------------------------------------------------------------------
>
> Key: HDFS-1505
> URL: https://issues.apache.org/jira/browse/HDFS-1505
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.22.0, 0.23.0
> Reporter: Todd Lipcon
> Assignee: Aaron T. Myers
> Priority: Blocker
> Fix For: 0.22.0
>
> Attachments: hdfs-1505-22.0.patch, hdfs-1505-22.1.patch,
> hdfs-1505-test.txt, hdfs-1505-trunk.0.patch, hdfs-1505-trunk.1.patch
>
>
> After HDFS-1071, saveNamespace now appears to "succeed" even if all of the
> individual directories failed to save.
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