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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5897) Add more Metrics to Namenode to capture heap usage
Date Sat, 13 Jun 2009 08:15:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12719095#action_12719095
] 

Hadoop QA commented on HADOOP-5897:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12410190/stats.1.patch
  against trunk revision 784318.

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

    +1 tests included.  The patch appears to include 3 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 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 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/497/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/497/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/497/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/497/console

This message is automatically generated.

> Add more Metrics to Namenode to capture heap usage
> --------------------------------------------------
>
>                 Key: HADOOP-5897
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5897
>             Project: Hadoop Core
>          Issue Type: Improvement
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>         Attachments: stats.1.patch, stats.patch, stats.patch
>
>
> Recently we had GC issues, where Namenode used more heap than usual. There was no growth
indicated by the data in current Metrics to justify the heap usage. Adding more stats such
as:
> - Counter to track blocks that are pending deletion
> - BlocksMap hashmap capacity
> - Counter to track excess number of blocks 

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