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From Ryan Rawson <ryano...@gmail.com>
Subject Re: Scanner Performance Question / Observation
Date Mon, 03 Aug 2009 08:22:14 GMT
Have a look at htable.setScannerCaching, and please, please upgrade to 0.20
post haste. The only answer to 0.19 perf problems is "upgrade to 0.20"

On Aug 3, 2009 12:02 AM, "Kyle Oba" <kyleoba@gmail.com> wrote:

Hey folks,

I have a question (possibly naive) about a scans performance.

My scan is taking about 6 seconds to do the following:

470 rows extracted
total size of all rows together is about 1.4 megs

I'm using a InclusiveStopRow filter to limit rows which are being
extracted by the scanner.  The problem for me is that I will soon be
scanning 30x this amount of data soon, and 6x30 seconds will be quite
a hit.

We're already planning to jump to HBase v0.20 soon.  But, wanted to
see if folks thought the 6 second timing on this scan was reasonable,
or horribly off.



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