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Re: Proposed Patch to Improve Performance of Multi-BatchHash Join for Skewed Data Sets

From: "Robert Haas" <robertmhaas(at)gmail(dot)com>
To: "Bryce Cutt" <pandasuit(at)gmail(dot)com>
Cc: "Lawrence, Ramon" <ramon(dot)lawrence(at)ubc(dot)ca>, "Joshua Tolley" <eggyknap(at)gmail(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Proposed Patch to Improve Performance of Multi-BatchHash Join for Skewed Data Sets
Date: 2009-01-07 04:49:57
Message-ID: 603c8f070901062049t229691ccuc6b7fa7e0808a6aa@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
> We would really appreciate help on finalizing this patch, especially in
> regard to style issues.  Thank you for all the help.

Here is a cleaned-up version.  I fixed a number of whitespace issues,
improved a few comments, and rearranged one set of nested if-else
statements (hopefully without breaking anything in the process).

Josh / eggyknap -

Can you rerun your performance tests with this version of the patch?

...Robert

Attachment: histojoin_v5_rh1.patch
Description: text/x-diff (24.6 KB)

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