GitHub user kayousterhout opened a pull request:

    https://github.com/apache/spark/pull/16876

    [SPARK-19537] Move pendingPartitions to ShuffleMapStage.

    The pendingPartitions instance variable should be moved to ShuffleMapStage,
    because it is only used by ShuffleMapStages. This change is purely 
refactoring
    and does not change functionality.
    
    I fixed this in an attempt to clarify some of the discussion around #16620, 
which I was having trouble reasoning about.  I stole the helpful comment Imran 
wrote for pendingPartitions and used it here.
    
    cc @squito @markhamstra @jinxing64


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/kayousterhout/spark-1 SPARK-19537

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/16876.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #16876
    
----
commit 3e9af42a6238bc786153db41320a5dbc10d917d0
Author: Kay Ousterhout <[email protected]>
Date:   2017-02-09T22:00:18Z

    [SPARK-19537] Move pendingPartitions to ShuffleMapStage.
    
    The pendingPartitions instance variable should be moved to ShuffleMapStage,
    because it is only used by ShuffleMapStages. This change is purely 
refactoring
    and does not change functionality.

----


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