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Preserve pg_index.indisclustered across REINDEX CONCURRENTLY

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If the flag value is lost, a CLUSTER query following REINDEX
CONCURRENTLY could fail.  Non-concurrent REINDEX is already handling
this case consistently.

Author: Justin Pryzby
Discussion: https://postgr.es/m/20200229024202.GH29456@telsasoft.com
Backpatch-through: 12
This commit is contained in:
Michael Paquier
2020-03-03 10:12:49 +09:00
parent 3b5709e664
commit f087d63a45
3 changed files with 29 additions and 1 deletions
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8
src/backend/catalog/index.c
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@ -1528,7 +1528,13 @@ index_concurrently_swap(Oid newIndexId, Oid oldIndexId, const char *oldName)
newIndexForm->indimmediate = oldIndexForm->indimmediate;
oldIndexForm->indimmediate = true;
/* Mark old index as valid and new as invalid as index_set_state_flags */
/* Preserve indisclustered in the new index */
newIndexForm->indisclustered = oldIndexForm->indisclustered;
/*
* Mark the old index as valid, and the new index as invalid similarly
* to what index_set_state_flags() does.
*/
newIndexForm->indisvalid = true;
oldIndexForm->indisvalid = false;
oldIndexForm->indisclustered = false;