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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5670) CombineFileRecordReader should report progress when moving to the next file
Date Wed, 22 Jan 2014 22:54:23 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13879313#comment-13879313
] 

Hadoop QA commented on MAPREDUCE-5670:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12624440/MR-5670v2.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 2 new or modified
test files.

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

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

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4335//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4335//console

This message is automatically generated.

> CombineFileRecordReader should report progress when moving to the next file
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5670
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5670
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.9
>            Reporter: Jason Lowe
>            Assignee: Chen He
>            Priority: Minor
>         Attachments: MR-5670.patch, MR-5670v2.patch
>
>
> If a combine split consists of many "empty" files (i.e.: no record found by the underlying
record reader) then theoretically a task can timeout due to lack of reported progress.



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