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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1328) Hadoop Streaming needs to provide a way for the stream plugin to update global counters
Date Tue, 03 Jun 2008 21:30:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602084#action_12602084
] 

Hadoop QA commented on HADOOP-1328:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12383210/hadoop-1328-v5.patch
  against trunk revision 662813.

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

    +1 tests included.  The patch appears to include 9 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 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/2549/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2549/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2549/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2549/console

This message is automatically generated.

> Hadoop Streaming needs to provide a way for the stream plugin to update global counters
> ---------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1328
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1328
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/streaming
>            Reporter: Runping Qi
>            Assignee: Tom White
>         Attachments: hadoop-1328-v2.patch, hadoop-1328-v3.patch, hadoop-1328-v4.patch,
hadoop-1328-v5.patch, hadoop-1328.patch
>
>
> Sometimes, the stream plugin may want to create/update its own global counters.
> There is no way to do so currently.
> One possible way to enable that is to use the stderr output of the stream process.
> The stream process can emit the global counter update information (such as GLOCAL_COUNTER
COUNTER_NAME NUM)
> to the stderr of the process. The Stderr handling thread can call the global counter
API whenever it encounters the global counter update information line.

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