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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Hadoop and Hbase
Date Tue, 15 Apr 2014 04:07:41 GMT
When Region Servers are co-located with Datanodes, you can utilize short
circuit read feature.
See 12.11.2 of http://hbase.apache.org/book.html#perf.hdfs

Factors to consider co-location include the allocation of memory of server
- so that region server and Data node can have ample memory to fulfill
their tasks.


On Mon, Apr 14, 2014 at 8:59 PM, Shashidhar Rao

> Hi,
> Please somebody clarify how hadoop and hbase are both used in real
> production environment.
> Do the Region Servers of Hbase can be installed in Hadoop Datanodes or
> Region servers are separated from Hadoop data nodes in multiple clusters.
> I know it's Hbase centric but still if someone has experienced in real
> production environment please share your experiences.
> Regards
> Shashidhar

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