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Set a snapshot before running analyze on a single table, to avoid a

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crash when analyzing tables with expressional indexes.
This commit is contained in:
Alvaro Herrera 2005-11-28 13:34:10 +00:00
parent 73fa3d9a96
commit 4123dbb75d
1 changed files with 9 additions and 1 deletions
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10
src/backend/postmaster/autovacuum.c
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.5.2.1 2005/11/22 18:23:15 momjian Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.5.2.2 2005/11/28 13:34:10 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -898,6 +898,14 @@ autovacuum_do_vac_analyze(List *relids, bool dovacuum, bool doanalyze,
vacstmt->relation = NULL; /* all tables, or not used if relids != NIL */
vacstmt->va_cols = NIL;
/*
* Functions in indexes may want a snapshot set. Note we only need
* to do this in limited cases, because it'll be done in vacuum()
* otherwise.
*/
if (doanalyze && !dovacuum && relids != NIL)
ActiveSnapshot = CopySnapshot(GetTransactionSnapshot());
vacuum(vacstmt, relids);
pfree(vacstmt);