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From Stack <st...@duboce.net>
Subject Re: Coprocessor Aggregation supposed to be ~20x slower than Scans?
Date Mon, 14 May 2012 19:08:11 GMT
On Mon, May 14, 2012 at 12:02 PM, anil gupta <anilgupta84@gmail.com> wrote:
> I loaded around 70 thousand 1-2KB records in HBase. For scans, with my
> custom filter i am able to get 97 rows in 500 milliseconds and for doing
> sum, max, min(in built aggregations of HBase) on the same custom filter its
> taking 11000 milliseconds. Does this mean that coprocessors aggregation is
> supposed to be around ~20x slower than scans? Am i missing any trick over
> here?

That seems like a high tax to pay for running CPs.  Can you dig in on
where the time is being spent?  (See another recent note on this list
or on dev where Gary Helmling talks about how he did basic profiling
of CPs).

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