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From "TezQA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TEZ-3115) Shuffle string handling adds significant memory overhead
Date Fri, 26 Feb 2016 17:54:18 GMT

    [ https://issues.apache.org/jira/browse/TEZ-3115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15169414#comment-15169414
] 

TezQA commented on TEZ-3115:
----------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment
  http://issues.apache.org/jira/secure/attachment/12790149/TEZ-3115.2.patch
  against master revision 923f7b4.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

      {color:red}-1 javac{color}.  The applied patch generated 31 javac compiler warnings
(more than the master's current 30 warnings).

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 2 new Findbugs (version
3.0.1) 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 .

Test results: https://builds.apache.org/job/PreCommit-TEZ-Build/1520//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-TEZ-Build/1520//artifact/patchprocess/newPatchFindbugsWarningstez-api.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-TEZ-Build/1520//artifact/patchprocess/newPatchFindbugsWarningstez-runtime-library.html
Javac warnings: https://builds.apache.org/job/PreCommit-TEZ-Build/1520//artifact/patchprocess/diffJavacWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-TEZ-Build/1520//console

This message is automatically generated.

> Shuffle string handling adds significant memory overhead
> --------------------------------------------------------
>
>                 Key: TEZ-3115
>                 URL: https://issues.apache.org/jira/browse/TEZ-3115
>             Project: Apache Tez
>          Issue Type: Bug
>    Affects Versions: 0.7.0
>            Reporter: Jason Lowe
>            Assignee: Jonathan Eagles
>         Attachments: TEZ-3115.1.patch, TEZ-3115.2.patch
>
>
> While investigating the OOM heap dump from TEZ-3114 I noticed that the ShuffleManager
and other shuffle-related objects were holding onto many strings that added up to over a hundred
megabytes of memory.



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