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CIC and REINDEX CONCURRENTLY assume backends see their catalog changes no later than each backend's next transaction start. That failed to hold when a backend absorbed a relevant invalidation in the middle of running RelationBuildDesc() on the CIC index. Queries that use the resulting index can silently fail to find rows. Fix this for future index builds by making RelationBuildDesc() loop until it finishes without accepting a relevant invalidation. It may be necessary to reindex to recover from past occurrences; REINDEX CONCURRENTLY suffices. Back-patch to 9.6 (all supported versions). Noah Misch and Andrey Borodin, reviewed (in earlier versions) by Andres Freund. Discussion: https://postgr.es/m/20210730022548.GA1940096@gust.leadboat.com
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* inval.h
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* POSTGRES cache invalidation dispatcher definitions.
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*
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*
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* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/utils/inval.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef INVAL_H
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#define INVAL_H
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#include "access/htup.h"
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#include "storage/relfilenode.h"
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#include "utils/relcache.h"
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typedef void (*SyscacheCallbackFunction) (Datum arg, int cacheid, uint32 hashvalue);
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typedef void (*RelcacheCallbackFunction) (Datum arg, Oid relid);
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extern void AcceptInvalidationMessages(void);
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extern void AtEOXact_Inval(bool isCommit);
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extern void AtEOSubXact_Inval(bool isCommit);
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extern void AtPrepare_Inval(void);
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extern void PostPrepare_Inval(void);
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extern void CommandEndInvalidationMessages(void);
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extern void CacheInvalidateHeapTuple(Relation relation,
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HeapTuple tuple,
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HeapTuple newtuple);
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extern void CacheInvalidateCatalog(Oid catalogId);
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extern void CacheInvalidateRelcache(Relation relation);
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extern void CacheInvalidateRelcacheByTuple(HeapTuple classTuple);
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extern void CacheInvalidateRelcacheByRelid(Oid relid);
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extern void CacheInvalidateSmgr(RelFileNodeBackend rnode);
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extern void CacheInvalidateRelmap(Oid databaseId);
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extern void CacheRegisterSyscacheCallback(int cacheid,
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SyscacheCallbackFunction func,
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Datum arg);
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extern void CacheRegisterRelcacheCallback(RelcacheCallbackFunction func,
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Datum arg);
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extern void CallSyscacheCallbacks(int cacheid, uint32 hashvalue);
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extern void InvalidateSystemCaches(void);
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extern void InvalidateSystemCachesExtended(bool debug_discard);
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#endif /* INVAL_H */
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