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Commitae9aba6

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Keep rd_newRelfilenodeSubid across overflow.
Teach RelationCacheInvalidate() to keep rd_newRelfilenodeSubid across rel cachemessage overflows, so that behaviour is now fully deterministic.Noah Misch
1 parent42fa810 commitae9aba6

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‎src/backend/utils/cache/relcache.c‎

Lines changed: 8 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -2163,8 +2163,14 @@ RelationCacheInvalidate(void)
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/* Must close all smgr references to avoid leaving dangling ptrs */
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RelationCloseSmgr(relation);
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2166-
/* Ignore new relations, since they are never cross-backend targets */
2167-
if (relation->rd_createSubid!=InvalidSubTransactionId)
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/*
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* Ignore new relations; no other backend will manipulate them before
2168+
* we commit. Likewise, before replacing a relation's relfilenode, we
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* shall have acquired AccessExclusiveLock and drained any applicable
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* pending invalidations.
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*/
2172+
if (relation->rd_createSubid!=InvalidSubTransactionId||
2173+
relation->rd_newRelfilenodeSubid!=InvalidSubTransactionId)
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continue;
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21702176
relcacheInvalsReceived++;

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