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From "Ravi Gummadi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2761) New TaskController code doesn't run on Windows
Date Tue, 02 Aug 2011 10:30:27 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13076124#comment-13076124

Ravi Gummadi commented on MAPREDUCE-2761:

The NPE issue on linux shown in previous comment is observed in trunk.

> New TaskController code doesn't run on Windows
> ----------------------------------------------
>                 Key: MAPREDUCE-2761
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2761
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: task-controller, tasktracker
>    Affects Versions:, 0.23.0
>            Reporter: Todd Lipcon
> After MAPREDUCE-2178, TaskController assumes that pids are always available. The shell
executor object that's used to launch a JVM isn't retained, but rather the pid is set when
the task heartbeats. On Windows, there are no pids, and since the ShellCommandExecutor object
is no longer around, we can't call process.destroy(). So, the TaskController doesn't work
on Cygwin anymore.

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