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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 dab1603e52
commit 1f09121b4e
3 changed files with 51 additions and 6 deletions
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3
src/backend/access/transam/xlog.c
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@ -5391,6 +5391,9 @@ StartupXLOG(void)
oldestActiveXID = checkPoint.oldestActiveXid;
Assert(TransactionIdIsValid(oldestActiveXID));
/* Tell procarray about the range of xids it has to deal with */
ProcArrayInitRecovery(ShmemVariableCache->nextXid);
/*
* Startup commit log and subtrans only. Other SLRUs are not
* maintained during recovery and need not be started yet.