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Re: WIP: Hash Join-Filter Pruning using Bloom Filters - Mailing list pgsql-hackers

From Hannes Eder
Subject Re: WIP: Hash Join-Filter Pruning using Bloom Filters
Date
Msg-id 154e089b0811021436r222614fbw411ab446903b815f@mail.gmail.com
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In response to WIP: Hash Join-Filter Pruning using Bloom Filters  ("Jonah H. Harris" <jonah.harris@gmail.com>)
Responses Re: WIP: Hash Join-Filter Pruning using Bloom Filters  ("Jonah H. Harris" <jonah.harris@gmail.com>)
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On Sun, Nov 2, 2008 at 10:49 PM, Jonah H. Harris <jonah.harris@gmail.com> wrote:
> Similarly, I
> created a GUC to enable pruning, named bloom_pruning.

I guess calls to bloom_filter_XXX should be surrounded by "if
(bloom_pruning) ..." or a similar construct, i.e. make use of the GUC
variable bloom_pruning in the rest of the code.

Can you provide some figures on the performance impact of the bloom filter?

Best,
-Hannes

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