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From "Matt Foley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1505) saveNamespace appears to succeed even if all directories fail to save
Date Thu, 12 May 2011 19:31:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032607#comment-13032607

Matt Foley commented on HDFS-1505:

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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