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Ensure no xid gaps during Hot Standby startup

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In some cases with higher numbers of subtransactions
it was possible for us to incorrectly initialize
subtrans leading to complaints of missing pages.

Bug report by Sergey Konoplev
Analysis and fix by Andres Freund
This commit is contained in:
Simon Riggs
2013-06-23 11:05:02 +01:00
parent 27e9e86f6d
commit a41c88194b
3 changed files with 51 additions and 6 deletions
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src/include/storage/procarray.h
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@@ -28,6 +28,7 @@ extern void ProcArrayRemove(PGPROC *proc, TransactionId latestXid);
extern void ProcArrayEndTransaction(PGPROC *proc, TransactionId latestXid);
extern void ProcArrayClearTransaction(PGPROC *proc);
extern void ProcArrayInitRecovery(TransactionId initializedUptoXID);
extern void ProcArrayApplyRecoveryInfo(RunningTransactions running);
extern void ProcArrayApplyXidAssignment(TransactionId topxid,
int nsubxids, TransactionId *subxids);