[jira] [Commented] (MAPREDUCE-5910) MRAppMaster should handle Resync from RM instead of shutting down.

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

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048824#comment-14048824 ] 

Hadoop QA commented on MAPREDUCE-5910:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12653384/MAPREDUCE-5910.2.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:green}+1 core tests{color}.  The patch passed unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app 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/4701//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4701//console

This message is automatically generated.

> MRAppMaster should handle Resync from RM instead of shutting down.
> ------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5910
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5910
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: applicationmaster
>            Reporter: Rohith
>            Assignee: Rohith
>             Fix For: 2.5.0
>
>         Attachments: MAPREDUCE-5910.1.patch, MAPREDUCE-5910.2.patch
>
>
> The ApplicationMasterService currently sends a resync response to which the AM responds by shutting down. The MRAppMaster behavior is expected to change to calling resyncing with the RM. Resync means resetting the allocate RPC sequence number to 0 and the AM should send its entire outstanding request to the RM. Note that if the AM is making its first allocate call to the RM then things should proceed like normal without needing a resync. The RM will return all containers that have completed since the RM last synced with the AM. Some container completions may be reported more than once.



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