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From "Hitesh Shah (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7722) Support a stop command in ShellCommandExecutor
Date Tue, 04 Oct 2011 20:42:34 GMT
Support a stop command in ShellCommandExecutor 
-----------------------------------------------

                 Key: HADOOP-7722
                 URL: https://issues.apache.org/jira/browse/HADOOP-7722
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 0.23.0
            Reporter: Hitesh Shah
            Priority: Minor
             Fix For: 0.23.0


Add a stop function call to Shell so as to either stop the process from getting started if
not already done so or destroy the process if it already has started. 

Context of usage: 
There can be race conditions when trying to kill an execution as the shell::execute call is
blocking and using the getProcess call is not a  feasible option as there can be a delay between
the execute call and when the process object is actually created ( after which it can be used
to kill the running sub-process ). 




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