hadoop-mapreduce-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Siddharth Seth (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3511) Counters occupy a good part of AM heap
Date Tue, 06 Dec 2011 00:27:41 GMT
Counters occupy a good part of AM heap
--------------------------------------

                 Key: MAPREDUCE-3511
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3511
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.1
            Reporter: Siddharth Seth


Per task counters seem to be occupying a good part of an AMs heap. Looks like more than 50%
of what's used by a TaskAttemptImpl object.
This could be optimized by interning strings or possibly using mrv1 counters which are optimized.
Currently counters are converted from mrv1 to mrv2 format for in memory storage. The conversion
could be delayed till it's actually required for RPC transfers.

--
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