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From Ryan Rawson <ryano...@gmail.com>
Subject Re: First numbers of new Server side implementation.
Date Thu, 16 Apr 2009 00:34:57 GMT
So basically speaking, HFile got us 5x, and the new implementation gets us
another 5x.

For a grand total of 10x.



On Wed, Apr 15, 2009 at 5:32 PM, Erik Holstad <erikholstad@gmail.com> wrote:

> Just created a simple test that puts 5 different columns into HBase at 3
> different ts, so you end up with 3 versions of 5 values
> in memcache + 2 storeFiles and compared the timing for the old and the new
> implementations.
>
> The query was asking for 3 versions of 2 of the columns, so a fairly simple
> setup, with no deletes and stuff, which would make
> the difference even bigger.
>
> Timing old = 2517596 ns
> Timing new = 373170 ns
>
> old/new = 6.7x
>
> This test is only done on the server side from the regionserver so no
> contact with the client so far, but it is looking good.
> Worth mentioning is also that this improvement is compared to the
> implementation already using HFile.
>

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