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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3277) fail over to loading a different FSImage if the first one we try to load is corrupt
Date Fri, 01 Mar 2013 05:27:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13590252#comment-13590252
] 

Hadoop QA commented on HDFS-3277:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12571535/HDFS-3277.004.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 6 new or modified
test files.

    {color:green}+1 tests included appear to have a timeout.{color}

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

        {color:red}-1 release audit{color}.  The applied patch generated 1 release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/4022//testReport/
Release audit warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/4022//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4022//console

This message is automatically generated.
                
> fail over to loading a different FSImage if the first one we try to load is corrupt
> -----------------------------------------------------------------------------------
>
>                 Key: HDFS-3277
>                 URL: https://issues.apache.org/jira/browse/HDFS-3277
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Andrew Wang
>         Attachments: HDFS-3277.002.patch, HDFS-3277.003.patch, HDFS-3277.004.patch
>
>
> Most users store multiple copies of the FSImage in order to prevent catastrophic data
loss if a hard disk fails.  However, our image loading code is currently not set up to start
reading another FSImage if loading the first one does not succeed.  We should add this capability.
> We should also be sure to remove the FSImage directory that failed from the list of FSImage
directories to write to, in the way we normally do when a write (as opopsed to read) fails.

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