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From "viswanathan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5508) JobTracker memory leak caused by unreleased FileSystem objects in JobInProgress#cleanupJob
Date Thu, 07 Nov 2013 12:46:19 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5508?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

viswanathan updated MAPREDUCE-5508:
-----------------------------------

    Attachment: JobInProgress.java
                CleanupQueue.java

Hi Chris/Xi,

PFA of Java classes which was modified based on the patches for JT OOME.

Do I miss anything in the Java class? I have modified based on the patches.

In hadoop 1.2.1, FileSystem.java class remains same as in the patch so I didn't modified.

Please review and send your feedback.

Thanks,

> 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: CleanupQueue.java, JobInProgress.java, 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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