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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-6106) Provide an option in ShellCommandExecutor to timeout commands that do not complete within a certain amount of time.
Date Thu, 25 Jun 2009 10:59:07 GMT
Provide an option in ShellCommandExecutor to timeout commands that do not complete within a
certain amount of time.
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                 Key: HADOOP-6106
                 URL: https://issues.apache.org/jira/browse/HADOOP-6106
             Project: Hadoop Common
          Issue Type: Improvement
          Components: util
            Reporter: Hemanth Yamijala
            Assignee: Sreekanth Ramakrishnan


In MAPREDUCE-211 we came across a need to provide an option to timeout commands launched via
the ShellCommandExecutor. The use case is for the health check script being developed in MAPREDUCE-211.
We would like the TaskTracker thread to not be blocked by a problematic script or in instances
where fork()+exec() has hung (which apparently has been observed in large clusters).

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