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From kayousterhout <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-3376] Add experimental (non-production)...
Date Sat, 13 Jun 2015 16:58:26 GMT
Github user kayousterhout commented on the pull request:

    https://github.com/apache/spark/pull/5403#issuecomment-111729666
  
    @pwendell I've seen performance gains even when the data fits in the buffer cache on the
write side, because opening a file still requires writing metadata to disk, which can become
a point of contention when many tasks are opening many files at the same time.  I've also
heard from a few folks who have configurations with a lot of memory (and not much disk space
/ no local disks) who would find this useful.  That being said, there are other compelling
reasons to close this -- which I've summarized in the PR description.


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