Use job control for tasks (and therefore for pipes and streaming)
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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: Devaraj Das
Fix For: 0.17.0
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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