GitHub user rxin opened a pull request:

    [SPARK-17925][SQL] Break fileSourceInterfaces.scala into multiple pieces

    ## What changes were proposed in this pull request?
    This patch does a few changes to the file structure of data sources:
    - Break fileSourceInterfaces.scala into multiple pieces (HadoopFsRelation, 
FileFormat, OutputWriter)
    - Move ParquetOutputWriter into its own file
    I created this as a separate patch so it'd be easier to review my future 
PRs that focus on refactoring this internal logic.
    ## How was this patch tested?
    N/A - should be covered by existing tests.

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

    $ git pull SPARK-17925

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

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

    This closes #15473
commit 7b9e4103c875113f23b60efe7454453c4ff6d53b
Author: Reynold Xin <>
Date:   2016-10-14T00:20:27Z

    [SPARK-17925][SQL] Break fileSourceInterfaces.scala into multiple pieces


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