[
https://issues.apache.org/jira/browse/MAPREDUCE-2214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12969485#action_12969485
]
Dick King commented on MAPREDUCE-2214:
--------------------------------------
Speculative execution is a legitimate way a task can become {{SUCCEEDED}} while
an attempt on that task is waiting to get launched.
> TaskTracker should release slot if task is not launched
> -------------------------------------------------------
>
> Key: MAPREDUCE-2214
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2214
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.1
> Reporter: Ramkumar Vadali
> Assignee: Ramkumar Vadali
>
> TaskTracker.TaskInProgress.launchTask() does not launch a task if it is not
> in an expected state. However, in the case where the task is not launched,
> the slot is not released. We have observed this in production - the task was
> in SUCCEEDED state by the time launchTask() got to it and then the slot was
> never released. It is not clear how the task got into that state, but it is
> better to handle the case.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
