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From Junegunn Choi <junegun...@gmail.com>
Subject Performance impact of io.file.buffer.size parameter of HDFS
Date Wed, 22 Oct 2014 01:17:11 GMT

I've read that on a modern hardware I should increase the value of
io.file.buffer.size parameter of HDFS, up to 128kb or so. [1] Does this
advice still hold true in the context of HBase? We've done a series of
performance benchmarks with the different values of it, but couldn't
observe a noticeable difference in performance. Is the default 4kb good
enough? What is the recommended value, or maybe it doesn't matter?

Thanks in advance.

[1]: Book: Hadoop - The Definitive Guide

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