Set a snapshot before running analyze on a single table, to avoid a
crash when analyzing tables with expressional indexes. Per report from Frank van Vugt.
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@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.6 2005/11/22 18:17:17 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.7 2005/11/28 13:35:09 alvherre Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -898,6 +898,14 @@ autovacuum_do_vac_analyze(List *relids, bool dovacuum, bool doanalyze,
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vacstmt->relation = NULL; /* all tables, or not used if relids != NIL */
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vacstmt->va_cols = NIL;
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/*
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* Functions in indexes may want a snapshot set. Note we only need
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* to do this in limited cases, because it'll be done in vacuum()
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* otherwise.
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*/
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if (doanalyze && !dovacuum && relids != NIL)
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ActiveSnapshot = CopySnapshot(GetTransactionSnapshot());
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vacuum(vacstmt, relids);
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pfree(vacstmt);
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