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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3540) Further improvement on recovery mode and edit log toleration in branch-1
Date Tue, 25 Sep 2012 15:35:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13462880#comment-13462880
] 

Hadoop QA commented on HDFS-3540:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12546530/h3540_20120925.patch
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/3230//console

This message is automatically generated.
                
> Further improvement on recovery mode and edit log toleration in branch-1
> ------------------------------------------------------------------------
>
>                 Key: HDFS-3540
>                 URL: https://issues.apache.org/jira/browse/HDFS-3540
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 1.2.0
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h3540_20120925.patch, HDFS-3540-b1.004.patch
>
>
> *Recovery Mode*: HDFS-3479 backported HDFS-3335 to branch-1.  However, the recovery mode
feature in branch-1 is dramatically different from the recovery mode in trunk since the edit
log implementations in these two branch are different.  For example, there is UNCHECKED_REGION_LENGTH
in branch-1 but not in trunk.
> *Edit Log Toleration*: HDFS-3521 added this feature to branch-1 to remedy UNCHECKED_REGION_LENGTH
and to tolerate edit log corruption.
> There are overlaps between these two features.  We study potential further improvement
in this issue.

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