<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi, all, <div><br></div><div>i try to check the performance of Map/Reduce of Gluster File system. </div><div><br></div><div>Mapper side speed is quite good and it is sometimes faster than hadoop's map job. </div><div><br></div><div>But in the Reduce Side job is much slower than hadoop. </div><div><br></div><div>i analyze the result and i found the primary reason of slow speed is bad performance in Merging stage. </div><div><br></div><div>Would you have any suggestion for this issue</div><div><br></div><div><br></div><div>FYI check the blog <a href="http://storage4com.blogspot.com/">http://storage4com.blogspot.com/</a></div><div><br></div><div>thanks.</div>
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