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Region locality and core/thread availability

I think my app wants to hit a particular region all the time. Since my table is only read-only (lookup). I have created more than one and randomly pick one to use. This way I can load the whole cluster. Is there a feature in Hbase which lets coprocessors run on another region server on another copy of the region if the original assigned region server is busy, for read only operations or if we mark the table read-only ? I guess not.
Anyways, any tools/debugging tips to confirm this "hot region" behavior ?

- kiru
Kiru Pakkirisamy | webcloudtech.wordpress.com