[ http://issues.apache.org/jira/browse/HADOOP-111?page=all ]
Doug Cutting updated HADOOP-111:
--------------------------------
Component: mapred
> 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
> Components: mapred
> 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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