Re: Fix for cube picksplit function

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От Robert Haas
Тема Re: Fix for cube picksplit function
Дата
Msg-id AANLkTikroS6akLbKQNrqiU9eEz7etCFhH=3yJ5zovqg3@mail.gmail.com
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Ответ на Fix for cube picksplit function  (Alexander Korotkov <aekorotkov@gmail.com>)
Список pgsql-hackers
On Fri, Oct 29, 2010 at 2:59 PM, Alexander Korotkov
<aekorotkov@gmail.com> wrote:
> Gist picksplit method implementation in cube contrib module contains a bug
> in Guttman's split algorithm implementation. It was mentioned before but it
> is still not fixed yet. Current implementation doesn't cause incorrect
> behavior, but index becomes very bad, because each index scan require to
> read significant part of index.

It looks to me like this can be safely back-patched, because it
doesn't affect the contents of index entries already on disk, just the
manner in which we construct new ones.

So I've committed this and back-patched it all the way back to 8.1.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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