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Commit1046367

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tglsfdckelvich
authored andcommitted
Fix order of arguments to SubTransSetParent().
ProcessTwoPhaseBuffer (formerly StandbyRecoverPreparedTransactions)mixed up the parent and child XIDs when calling SubTransSetParent torecord the transactions' relationship in pg_subtrans.Remarkably, analysis by Simon Riggs suggests that this doesn't lead tovisible problems (at least, not in non-Assert builds). That mightexplain why we'd not noticed it before. Nonetheless, it's surely wrong.This code was born broken, so back-patch to all supported branches.Discussion:https://postgr.es/m/20110.1492905318@sss.pgh.pa.us
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‎src/backend/access/transam/twophase.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2341,7 +2341,7 @@ ProcessTwoPhaseBuffer(TransactionId xid,
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}
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if (setParent)
2344-
SubTransSetParent(xid,subxid,overwriteOK);
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SubTransSetParent(subxid,xid,overwriteOK);
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}
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returnbuf;

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