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https://issues.apache.org/jira/browse/MAPREDUCE-5508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13815863#comment-13815863
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viswanathan commented on MAPREDUCE-5508:
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Hi Chris/Xi,
Hope you are doing great.
As mentioned, have upgraded our HDFS cluster with the following 3 patches for
JT OOME.
https://issues.apache.org/jira/secure/attachment/12590105/MAPREDUCE-5351-2.patch
https://issues.apache.org/jira/secure/attachment/12590672/MAPREDUCE-5351-addendum-1.patch
https://issues.apache.org/jira/secure/attachment/12604722/MAPREDUCE-5508.3.patch
In the above patches, I didn't add the patch of TestCleanupQueue class. Hope
its not required.
I have noticed that heap size of Jobtracker is gradually increasing after the
upgrade also.
Currently the heap size as follows,
Cluster Summary (Heap Size is 869.19 MB/8.89 GB) - Yesterday while re-starting
the JT the heap size was only 200MB plus.
Is the heap size will reduce automatically after any threshold limit?
Do I need to update any other patches/fix?
Please do the needful as it is in production environment.
Thanks,
Viswa.J
> JobTracker memory leak caused by unreleased FileSystem objects in
> JobInProgress#cleanupJob
> ------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5508
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5508
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 1-win, 1.2.1
> Reporter: Xi Fang
> Assignee: Xi Fang
> Priority: Critical
> Fix For: 1-win, 1.3.0
>
> Attachments: MAPREDUCE-5508.1.patch, MAPREDUCE-5508.2.patch,
> MAPREDUCE-5508.3.patch, MAPREDUCE-5508.patch
>
>
> MAPREDUCE-5351 fixed a memory leak problem but introducing another filesystem
> object (see "tempDirFs") that is not properly released.
> {code} JobInProgress#cleanupJob()
> void cleanupJob() {
> ...
> tempDirFs = jobTempDirPath.getFileSystem(conf);
> CleanupQueue.getInstance().addToQueue(
> new PathDeletionContext(jobTempDirPath, conf, userUGI, jobId));
> ...
> if (tempDirFs != fs) {
> try {
> fs.close();
> } catch (IOException ie) {
> ...
> }
> {code}
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