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From "Leon Mergen (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3932) Two small impromevents to pipes
Date Sat, 09 Aug 2008 20:14:44 GMT
Two small impromevents 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

Working with the ..mapred.pipes class a bit today, I found one bug and one possible interface

- 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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