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https://issues.apache.org/jira/browse/MAPREDUCE-3954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13222531#comment-13222531
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Hudson commented on MAPREDUCE-3954:
-----------------------------------
Integrated in Hadoop-Common-0.23-Commit #639 (See
[https://builds.apache.org/job/Hadoop-Common-0.23-Commit/639/])
MAPREDUCE-3954. Added new envs to separate heap size for different daemons
started via bin scripts. Contributed by Robert Joseph Evans.
svn merge --ignore-ancestry -c 1297174 ../../trunk/ (Revision 1297176)
Result = SUCCESS
vinodkv :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1297176
Files :
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/bin/mapred
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/bin/yarn
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/ClusterSetup.apt.vm
> Clean up passing HEAPSIZE to yarn and mapred commands.
> ------------------------------------------------------
>
> Key: MAPREDUCE-3954
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3954
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.2
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Priority: Blocker
> Fix For: 0.23.2
>
> Attachments: MAPREDUCE-3954-20120305.txt, MR-3954.txt, MR-3954.txt,
> MR-3954.txt
>
>
> Currently the heap size for all of these is set in yarn-env.sh.
> JAVA_HEAP_MAX is set to -Xmx1000m unless YARN_HEAPSIZE is set. If it is set
> it will override JAVA_HEAP_MAX. However, we do not always want to have the
> RM, NM, and HistoryServer with the exact same heap size. It would be logical
> to have inside of yarn and mapred to set JAVA_HEAP_MAX if
> YARN_RESOURCEMANAGER_HEAPSIZE, YARN_NODEMANAGER_HEAPSIZE or
> HADOOP_JOB_HISTORYSERVER_HEAPSIZE are set respectively. This is a bug
> because it is easy to configure the history server to store more entires then
> the heap can hold. It is also a performance issue if we do not allow the
> history server to cache many entries on a large cluster.
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