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Hadoop >> mail # dev >> MultithreadedMapper


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kenyh 2012-07-26, 05:47
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Radim Kolar 2012-07-26, 17:04
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syscokid 2012-07-26, 21:51
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kenyh 2012-07-27, 06:14
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kenyh 2012-07-27, 06:13
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Robert Evans 2012-07-26, 14:42
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Re: MultithreadedMapper
On Thu, Jul 26, 2012 at 7:42 AM, Robert Evans <[EMAIL PROTECTED]> wrote:
> About the only time that
> MultiThreaded mapper makes a lot of since is if there is a lot of
> computation associated with each key/value pair.

Or if the mapper does a lot of i/o to some external resource, e.g., a
web crawler.

Doug
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB