Regards, James,
Hari Kumar, from Ericsson Labs, in Data && Knowledge blog talked about
these issues:
http://labs.ericsson.com/blog/hbase-performance-tuners
It would be nice to talk with him to convince him to share its knowledge
here in the list, or in the
next HBaseCon
On 02/08/2013 08:49 PM, James Taylor wrote:
Wanted to check with folks and see if they've seen an issue around
this before digging in deeper. I'm on 0.94.2. If I execute in parallel
multiple scans to different parts of the same region, they appear to
be processed serially. It's actually faster from the client side to
execute a single serial scan than it is to execute multiple parallel
scans to different segments of the region. I do have region observer
coprocessors for the table I'm scanning, but my code is not doing any
synchronization.
Is there a known limitation in this area? Anyone else see anything
similar?
James
--
Marcos Ortiz Valmaseda,
Product Manager && Data Scientist at UCI
Blog: http://marcosluis2186.posterous.com
Twitter: @marcosluis2186 <http://twitter.com/marcosluis2186>
