Github user kanzhang commented on the pull request:
https://github.com/apache/spark/pull/1338#issuecomment-50223574
Updated the patch to allow users to specify batch size when reading in a
sequence file. When batch size is 1, the pickled data is unbatched (and custom
Writables are not cloned). Default batch size is set to 10. Added a few tests
for unbatched cases. Let me know if you have any further comments. Thanks
everyone for review and suggestions.
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