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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5465) Blocks remain under-replicated
Date Fri, 13 Mar 2009 03:20:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681591#action_12681591
] 

Hadoop QA commented on HADOOP-5465:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12402100/xmitsSync2.patch
  against trunk revision 753052.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/82/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/82/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/82/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/82/console

This message is automatically generated.

> Blocks remain under-replicated
> ------------------------------
>
>                 Key: HADOOP-5465
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5465
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.3
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>            Priority: Blocker
>             Fix For: 0.18.4, 0.19.2, 0.20.0, 0.21.0
>
>         Attachments: xmitsSync1.patch, xmitsSync2.patch
>
>
> Occasionally we see some blocks remain to be under-replicated in our production clusters.
This is what we obeserved:
> 1. Sometimes when increasing the replication factor of a file, some blocks belonged to
this file do not get to increase to the new replication factor.
> 2. When taking meta save in two different days, some blocks remain in under-replication
queue. 

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