[jira] Updated: (HADOOP-3932) Two small improvements to pipes

["Leon Mergen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-3932?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leon Mergen updated HADOOP-3932:
--------------------------------

    Summary: Two small improvements to pipes  (was: Two small impromevents to pipes)

> Two small improvements to pipes
> -------------------------------
>
>                 Key: HADOOP-3932
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3932
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: pipes
>    Affects Versions: 0.17.1
>         Environment: n/a
>            Reporter: Leon Mergen
>         Attachments: pipes.patch
>
>
> Working with the ..mapred.pipes class a bit today, I found one bug and one possible interface improvement:
> - Application.java in its constructor assumes that DistributedCache.getLocalCacheFiles () always returns non-zero, and returns an array with at least one element -- appropriate checks and exceptions should be thrown here.
> - Submitter.java provides a "submitJob ()" method, yet it acts like it's a runJob method (and also invokes mapred.JobClient.runClient ()) -- it should provide two interface methods, one runJob () and one submitJob (), who act just like the JobClient counterparts.
> Here is the small patch that implements both changes, based on the 0.17.1 release source -- just in case anyone cares for this minor improvement.

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