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https://issues.apache.org/jira/browse/HADOOP-4906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sharad Agarwal updated HADOOP-4906:
-----------------------------------
Attachment: 4906_v3.patch
Setting the JobConf references to null in TaskInProgress#cleanup had problem
since the TaskRunner thread may need the ref later. Had an offline discussion
with Devaraj and decided that TaskRunner#run would be the better place to clean
the references.
This patch makes the JobConf references to null in the finally block of
TaskRunner#run. Also had to keep some data in member variables of MapOutputFile
and TaskInProgress so that JobConf reference is not required when task finishes.
> TaskTracker running out of memory after running several tasks
> -------------------------------------------------------------
>
> Key: HADOOP-4906
> URL: https://issues.apache.org/jira/browse/HADOOP-4906
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.19.0
> Reporter: Arun C Murthy
> Assignee: Sharad Agarwal
> Priority: Blocker
> Fix For: 0.20.0
>
> Attachments: 4906_v1.patch, 4906_v2.patch, 4906_v3.patch
>
>
> Looks like the TaskTracker isn't cleaning up correctly after completed/failed
> tasks, I suspect that the JobConfs aren't being deallocated. Eventually the
> TaskTracker runs out of memory after running several tasks.
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