hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Robert Joseph Evans (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3711) AppMaster recovery for Medium to large jobs take long time
Date Fri, 03 Feb 2012 22:33:54 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13200107#comment-13200107
] 

Robert Joseph Evans commented on MAPREDUCE-3711:
------------------------------------------------

I ran several single node cluster tests manually with this patch.  I ran wordcount from the
examples with 30 reducers.  I would kill the AM with kill -9 at various points.  For one test
I would kill it after half the maps finished.  In another test I would kill it after half
the reducers finished.  After each test I verified that the output was produced correctly.
 I also tried doing both in one run and I filed MAPREDUCE-3802 for that issue.  But it is
a preexisting issue.

I did not run any manual tests yet with the old API.
                
> AppMaster recovery for Medium to large jobs take long time
> ----------------------------------------------------------
>
>                 Key: MAPREDUCE-3711
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3711
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: Siddharth Seth
>            Assignee: Robert Joseph Evans
>            Priority: Blocker
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3711-20120203.txt, MR-3711.txt, MR-3711.txt, MR-3711.txt
>
>
> Reported by [~karams]
> yarn.resourcemanager.am.max-retries=2
> Ran test cases with sort job on 350 scale having 16800 maps and 680 reduces -:
> 1. After 70 secs of Job Sumbission Am is killed using kill -9, around 3900 maps were
completed and 680 reduces were
> scheduled, Second AM got restart. Job got completed in 980 secs. AM took very less time
to recover.
> 2. After 150 secs of Job Sumbission AM is killed using kill -9, around 90% maps were
completed and 680 reduces were
> scheduled , Second AM got restart Job got completed in 1000 secs. AM got revocer.
> 3. After 150 secs of Job Sumbission AM as killed using kill -9, almost all maps were
completed and only 680 reduces
> were running, Recovery was too slow, AM was still revocering after 1hr :40 mis when I
killed the run.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message