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Posted to common-dev@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2007/10/10 18:05:50 UTC
[jira] Assigned: (HADOOP-2016) Race condition in removing a KILLED
task from tasktracker
[ https://issues.apache.org/jira/browse/HADOOP-2016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun C Murthy reassigned HADOOP-2016:
-------------------------------------
Assignee: Arun C Murthy
> Race condition in removing a KILLED task from tasktracker
> ---------------------------------------------------------
>
> Key: HADOOP-2016
> URL: https://issues.apache.org/jira/browse/HADOOP-2016
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Reporter: Devaraj Das
> Assignee: Arun C Murthy
> Priority: Blocker
> Fix For: 0.15.0
>
>
> I ran into a situation where a speculative task was killed by the JobTracker and the relevant TaskTracker got the right KillTaskAction, but the tasktracker continued to hold a reference to that task (although the task jvm was killed). The task continued to be in RUNNING state in both the JobTracker and that TaskTracker for ever. I suspect there is some race condition in reading/updating datastructures inside the taskCleanupThread & transmitHeartBeat.
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