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HBase, mail # user - coprocessor status query


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Re: coprocessor status query
Gary Helmling 2013-10-22, 23:36
>
> "The coprocessor class is of course still in memory on the
> regionserver,...."
>
> That was kinda my point.
>
> You can't remove the class from the RS until you do a rolling restart.
>

Yes, understood.

However, your original statement that "You can't remove a coprocessor"
needed some clarification, in that the coprocessor that threw the exception
_is_ removed from the active set of coprocessors for that region.  So it is
no longer invoked for pre/post hooks on the call path for further requests.

>From the original question, I take it that this invocation context is what
Wei cared about.