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Add sortsupport for gist_btree opclasses, for faster index builds.

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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
This commit is contained in:
Heikki Linnakangas
2021-04-07 13:22:05 +03:00
parent dd13ad9d39
commit 9f984ba6d2
77 changed files with 1530 additions and 3 deletions
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src/backend/access/gist/gistbuild.c
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@ -260,6 +260,7 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
/*
* Sort all data, build the index from bottom up.
*/
elog(DEBUG1, "using sorted GiST build");
buildstate.sortstate = tuplesort_begin_index_gist(heap,
index,
maintenance_work_mem,