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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7929) inotify unable fetch pre-upgrade edit log segments once upgrade starts
Date Mon, 16 Mar 2015 18:21:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14363646#comment-14363646
] 

Hadoop QA commented on HDFS-7929:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12704832/HDFS-7929-001.patch
  against trunk revision ed4e72a.

    {color:red}-1 patch{color}.  Trunk compilation may be broken.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9900//console

This message is automatically generated.

> inotify unable fetch pre-upgrade edit log segments once upgrade starts
> ----------------------------------------------------------------------
>
>                 Key: HDFS-7929
>                 URL: https://issues.apache.org/jira/browse/HDFS-7929
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-7929-000.patch, HDFS-7929-001.patch
>
>
> inotify is often used to periodically poll HDFS events. However, once an HDFS upgrade
has started, edit logs are moved to /previous on the NN, which is not accessible. Moreover,
once the upgrade is finalized /previous is currently lost forever.



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