[jira] [Commented] (MAPREDUCE-5825) Provide diagnostics for reducers killed during ramp down

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

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13965123#comment-13965123 ] 

Hadoop QA commented on MAPREDUCE-5825:
--------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12639545/MAPREDUCE-5825.v01.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 1 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}.  There were no new javadoc 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:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app:

                  org.apache.hadoop.mapreduce.v2.app.TestMRAppMaster

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4495//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4495//console

This message is automatically generated.

> Provide diagnostics for reducers killed during ramp down
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-5825
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5825
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mr-am
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>         Attachments: MAPREDUCE-5825.v01.patch
>
>
> Since we operate many queues pretty much at their capacity it some times happens that a failed mapper causes a reducer ramp down. However, the user can only see "Container killed by the ApplicationMaster" as a diagnostic message for the task attempt, and have to dig through the AM log in order to piece things together.



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