[jira] Commented: (HADOOP-4103) Alert for missing blocks

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12677852#action_12677852 ] 

Hadoop QA commented on HADOOP-4103:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12401076/HADOOP-4103.patch
  against trunk revision 748861.

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

    +1 tests included.  The patch appears to include 11 new or modified tests.

    +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 appears to introduce 2 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 failed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/26/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/26/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/26/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/26/console

This message is automatically generated.

> Alert for missing blocks
> ------------------------
>
>                 Key: HADOOP-4103
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4103
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>    Affects Versions: 0.17.2
>            Reporter: Christian Kunz
>            Assignee: Raghu Angadi
>             Fix For: 0.20.0
>
>         Attachments: HADOOP-4103.patch, HADOOP-4103.patch, HADOOP-4103.patch
>
>
> A whole bunch of datanodes became dead because of some network problems resulting in  heartbeat timeouts although datanodes were fine.
> Many processes started to fail because of the corrupted filesystem.
> In order to catch and diagnose such problems faster the namenode should detect the corruption automatically and provide a way to alert operations. At the minimum it should show the fact of corruption on the GUI.

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