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Ignore BRIN indexes when checking for HOT updates

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When determining whether an index update may be skipped by using HOT, we
can ignore attributes indexed by block summarizing indexes without
references to individual tuples that need to be cleaned up.

A new type TU_UpdateIndexes provides a signal to the executor to
determine which indexes to update - no indexes, all indexes, or only the
summarizing indexes.

This also removes rd_indexattr list, and replaces it with rd_attrsvalid
flag. The list was not used anywhere, and a simple flag is sufficient.

This was originally committed as 5753d4ee32, but then got reverted by
e3fcca0d0d because of correctness issues.

Original patch by Josef Simanek, various fixes and improvements by Tomas
Vondra and me.

Authors: Matthias van de Meent, Josef Simanek, Tomas Vondra
Reviewed-by: Tomas Vondra, Alvaro Herrera
Discussion: https://postgr.es/m/05ebcb44-f383-86e3-4f31-0a97a55634cf@enterprisedb.com
Discussion: https://postgr.es/m/CAFp7QwpMRGcDAQumN7onN9HjrJ3u4X3ZRXdGFT0K5G2JWvnbWg%40mail.gmail.com
This commit is contained in:
Tomas Vondra
2023-03-20 10:34:07 +01:00
parent e858312683
commit 19d8e2308b
30 changed files with 448 additions and 76 deletions
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13
src/backend/executor/nodeModifyTable.c
View File

@ -110,8 +110,8 @@ typedef struct ModifyTableContext
typedef struct UpdateContext
{
bool updated; /* did UPDATE actually occur? */
bool updateIndexes; /* index update required? */
bool crossPartUpdate; /* was it a cross-partition update? */
TU_UpdateIndexes updateIndexes; /* Which index updates are required? */
/*
* Lock mode to acquire on the latest tuple version before performing
@ -1099,7 +1099,8 @@ ExecInsert(ModifyTableContext *context,
recheckIndexes = ExecInsertIndexTuples(resultRelInfo,
slot, estate, false, true,
&specConflict,
arbiterIndexes);
arbiterIndexes,
false);
/* adjust the tuple's state accordingly */
table_tuple_complete_speculative(resultRelationDesc, slot,
@ -1138,7 +1139,8 @@ ExecInsert(ModifyTableContext *context,
if (resultRelInfo->ri_NumIndices > 0)
recheckIndexes = ExecInsertIndexTuples(resultRelInfo,
slot, estate, false,
false, NULL, NIL);
false, NULL, NIL,
false);
}
}
@ -2118,11 +2120,12 @@ ExecUpdateEpilogue(ModifyTableContext *context, UpdateContext *updateCxt,
List *recheckIndexes = NIL;
/* insert index entries for tuple if necessary */
if (resultRelInfo->ri_NumIndices > 0 && updateCxt->updateIndexes)
if (resultRelInfo->ri_NumIndices > 0 && (updateCxt->updateIndexes != TU_None))
recheckIndexes = ExecInsertIndexTuples(resultRelInfo,
slot, context->estate,
true, false,
NULL, NIL);
NULL, NIL,
(updateCxt->updateIndexes == TU_Summarizing));
/* AFTER ROW UPDATE Triggers */
ExecARUpdateTriggers(context->estate, resultRelInfo,