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https://issues.apache.org/jira/browse/HADOOP-2721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12668834#action_12668834
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Ravi Gummadi commented on HADOOP-2721:
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ant test-patch gave:
[exec] +1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 6 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
[exec]
[exec] +1 Eclipse classpath. The patch retains Eclipse classpath
integrity.
Unit tests also passed on my local machine.
> Use job control for tasks (and therefore for pipes and streaming)
> -----------------------------------------------------------------
>
> Key: HADOOP-2721
> URL: https://issues.apache.org/jira/browse/HADOOP-2721
> Project: Hadoop Core
> Issue Type: Improvement
> Components: contrib/streaming, mapred, pipes
> Reporter: Owen O'Malley
> Assignee: Ravi Gummadi
> Attachments: HADOOP-2721-v10.patch, HADOOP-2721-v11.1.patch,
> HADOOP-2721-v11.3.patch, HADOOP-2721-v11.4.patch, HADOOP-2721-v11.patch,
> HADOOP-2721-v2.patch, HADOOP-2721-v3.patch, HADOOP-2721-v9.patch,
> HADOOP-2721.patch, HADOOP-2721.patch, HADOOP-2721.patch
>
>
> We should use the setsid command when the task is launched to create a new
> session. We should be able to use the setsid program when we launch the bash
> process to create a new session. That will allow us to kill the entire
> session with a single signal and remove the need for the ping methods in both
> TaskTracker.Child and pipes.
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