Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/12074#issuecomment-203656188
Is this the only place where buffering helps or would it make sense to do
buffered reads from Snappy streams in other circumstances as well? In other
words, should this buffering perhaps either be done at more call-sites of
`wrapForCompression` or in `wrapForCompression` itself? (Note that pushing this
into `wrapForCompression` risks accidental double-buffering, which might be
undesirable).
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