I see this is HBASE-6870.  I thought that sounded familiar.

On Mon, Mar 4, 2013 at 6:23 PM, Gary Helmling <ghelml...@gmail.com> wrote:

>
> Check your logs for whether your end-point coprocessor is hitting
>> zookeeper on every invocation to figure out the region start key.
>> Unfortunately (at least last time I checked), the default way of invoking
>> an end point coprocessor doesn't use the meta cache. You can go through a
>> combination of the following instead:
>>     HRegionLocation regionLocation = retried ?
>>         connection.relocateRegion(**tableName, tableKey) :
>>         connection.locateRegion(**tableName, tableKey);
>>     ...
>> Then call HConnection.processExecs call, passing in the regionKeys from
>> above.
>> You can trap the error case of the region being relocated and try again
>> with retried = true and it'll update the meta data cache when
>> relocateRegion is called.
>>
>
>
> Any idea if we have an improvement logged in JIRA for this?  This is
> definitely something we should improve on.
>

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