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From "Andrzej Bialecki (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-111) JobClient.runJob() should return exit status for a job.
Date Thu, 30 Mar 2006 10:51:26 GMT
JobClient.runJob() should return exit status for a job.

         Key: HADOOP-111
         URL: http://issues.apache.org/jira/browse/HADOOP-111
     Project: Hadoop
        Type: Bug
    Reporter: Andrzej Bialecki 

JobClient.runJob() doesn't return any values. Any information about the exit status of a job
is discarded (or appears only in logs).

It should be possible to return the exit status, so that JobClient users can determine whether
a job was successfully completed or not. This is also important when using cmd-line tools
in shell scripts - currently they don't return any exit codes, because it's not possible to
determine the outcome of a job submitted through JobClient. As a consequence, it's difficult
to automate repetitive jobs using shells scripts.

It would be also nice to have an exit message in case of errors, for human consumption.

I propose to implement one of the following:

* change the return type of this method from void to int

* or, better yet, to put the exit code and optional exit messages inside the JobConf instance
under pre-defined keys.

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