Github user mateiz commented on the pull request:
https://github.com/apache/spark/pull/252#issuecomment-39041796
Also, what happens here if you have a single file that's multiple HDFS
blocks? For instance say your block size is 64 MB but your file is 100. I
thought CombineFileInputFormat will still break that file down into 2 splits,
which is not what we want. Have you tested with this?
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