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MapReduce, mail # user - FSDataInputStream: setReadAhead, setDropBehind

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FSDataInputStream: setReadAhead, setDropBehind
John Lilley 2013-11-13, 14:22
I'm assuming that these methods exist to improve performance of certain I/O patterns, but the API doc doesn't explain when one would use them.  Our software's I/O pattern is mostly sequential I/O in large buffers (e.g. 256k).  Would one set these differently for local block I/O vs remote block I/O?