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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3727) TaskTracker directoryCleanupThread never gets terminated
Date Wed, 09 Jul 2008 15:15:31 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12612141#action_12612141
] 

Steve Loughran commented on HADOOP-3727:
----------------------------------------

One aspect of the taskCleanupThread is that it holds an implicit reference to the TaskThread,
so until the TaskCleanupThread is terminated, the TaskTracker and its memory will be retained.

> TaskTracker directoryCleanupThread never gets terminated
> --------------------------------------------------------
>
>                 Key: HADOOP-3727
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3727
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.19.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> When a task tracker starts its work it calls startCleanupThreads() to create a directoryCleanupThread.
> only, that thread is never terminated; it runs for the life of the process. 
> It should be terminated when the TaskTracker itself is terminated, presumably after it
has done the last cleanup. 

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