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Allow the use of a hash index on the subscriber during replication.

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Commit 89e46da5e5 allowed using BTREE indexes that are neither
PRIMARY KEY nor REPLICA IDENTITY on the subscriber during apply of
update/delete. This patch extends that functionality to also allow HASH
indexes.

We explored supporting other index access methods as well but they don't
have a fixed strategy for equality operation which is required by the
current infrastructure in logical replication to scan the indexes.

Author: Kuroda Hayato
Reviewed-by: Peter Smith, Onder Kalaci, Amit Kapila
Discussion: https://postgr.es/m/TYAPR01MB58669D7414E59664E17A5827F522A@TYAPR01MB5866.jpnprd01.prod.outlook.com
This commit is contained in:
Amit Kapila
2023-07-14 08:21:54 +05:30
parent a5ea825f95
commit edca342434
7 changed files with 186 additions and 16 deletions
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src/include/executor/executor.h
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@ -646,6 +646,7 @@ extern void check_exclusion_constraint(Relation heap, Relation index,
/*
* prototypes from functions in execReplication.c
*/
extern StrategyNumber get_equal_strategy_number_for_am(Oid am);
extern bool RelationFindReplTupleByIndex(Relation rel, Oid idxoid,
LockTupleMode lockmode,
TupleTableSlot *searchslot,