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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

1 parent38a6e57 commit8565808Copy full SHA for 8565808

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src/backend/access/transam
- twophase.c

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`‎src/backend/access/transam/twophase.c‎`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -1922,7 +1922,7 @@ StandbyRecoverPreparedTransactions(bool overwriteOK)`
`1922`	`1922`	`TransactionIdsubxid=subxids[i];`
`1923`	`1923`
`1924`	`1924`	`Assert(TransactionIdFollows(subxid,xid));`
`1925`		`-SubTransSetParent(xid,subxid,overwriteOK);`
	`1925`	`+SubTransSetParent(subxid,xid,overwriteOK);`
`1926`	`1926`	`}`
`1927`	`1927`	`}`
`1928`	`1928`	`}`

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Commit8565808

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`‎src/backend/access/transam/twophase.c‎`

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