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This enables sortsupport in the btree_gist extension for faster builds
of gist indexes.
Sorted gist index build strategy is the new default now. Regression
tests are unchanged (except for one small change in the 'enum' test to
add coverage for enum values added later) and are using the sorted
build strategy instead.
One version of this was committed a long time ago already, in commit
9f984ba6d2, but it was quickly reverted because of buildfarm
failures. The failures were presumably caused by some small bugs, but
we never got around to debug and commit it again. This patch was
written from scratch, implementing the same idea, with some fragments
and ideas from the original patch.
Author: Bernd Helmle <mailings@oopsware.de>
Author: Andrey Borodin <x4mmm@yandex-team.ru>
Discussion: https://www.postgresql.org/message-id/64d324ce2a6d535d3f0f3baeeea7b25beff82ce4.camel@oopsware.de
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This reverts commit 9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be.
It was making the buildfarm unhappy, apparently setting client_min_messages
in a regression test produces different output if log_statement='all'.
Another issue is that I now suspect the bit sortsupport function was in
fact not correct to call byteacmp(). Revert to investigate both of those
issues.
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Commit 16fa9b2b30 introduced a faster way to build GiST indexes, by
sorting all the data. This commit adds the sortsupport functions needed
to make use of that feature for btree_gist.
Author: Andrey Borodin
Discussion: https://www.postgresql.org/message-id/2F3F7265-0D22-44DB-AD71-8554C743D943@yandex-team.ru
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This will allow enums to be used in exclusion constraints.
The code uses the new CallerFInfoFunctionCall infrastructure in fmgr,
and the support for it added to btree_gist in commit 393bb504d7.
Reviewed by Tom Lane and Anastasia Lubennikova
Discussion: http://postgr.es/m/56EA8A71.8060107@dunslane.net
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