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HBase >> mail # user >> speeding up rowcount


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speeding up rowcount
Hi,

I have been doing a rowcount via mapreduce and its taking about 4-5 hours to
count a 500million rows in a table. I was wondering if there are any map
reduce tunings I can do so it will go much faster.

I have 10 node cluster, each node with 8CPUs with 64GB of memory. Any tuning
advice would be much appreciated.
--
--- Get your facts first, then you can distort them as you please.--
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Tom Goren 2011-10-09, 15:07
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lars hofhansl 2011-10-10, 00:44
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Himanshu Vashishtha 2011-10-10, 01:05
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Rita 2011-10-29, 14:29
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Ted Yu 2011-10-29, 14:46
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Rita 2011-10-29, 16:56
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Ted Yu 2011-10-29, 21:32
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Ted Yu 2011-10-09, 15:09
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Himanshu Vashishtha 2011-10-09, 15:19
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Rita 2011-10-09, 15:30
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Ted Yu 2011-10-09, 15:44
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Himanshu Vashishtha 2011-10-09, 16:26
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Ted Yu 2011-10-09, 16:29
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Ryan Rawson 2011-10-10, 00:01