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Commit3372f1a

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Fix checkpointer crash in EXEC_BACKEND builds.
Nothing in the checkpointer calls InitXLOGAccess(), so WALInsertLocksnever got initialized there. Without EXEC_BACKEND, it works anywaybecause the correct value is inherited from the postmaster, butwith EXEC_BACKEND we've got a problem. The problem appears to havebeen introduced by commit68a2e52.To fix, move the relevant initialization steps from InitXLOGAccess()to XLOGShmemInit(), making this more parallel to what we doelsewhere.Amit Kapila
1 parentfece13d commit3372f1a

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  • src/backend/access/transam

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‎src/backend/access/transam/xlog.c‎

Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -4815,6 +4815,11 @@ XLOGShmemInit(void)
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{
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/* both should be present or neither */
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Assert(foundCFile&&foundXLog);
4818+
4819+
/* Initialize local copy of WALInsertLocks and register the tranche */
4820+
WALInsertLocks=XLogCtl->Insert.WALInsertLocks;
4821+
LWLockRegisterTranche(XLogCtl->Insert.WALInsertLockTrancheId,
4822+
&XLogCtl->Insert.WALInsertLockTranche);
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return;
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}
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memset(XLogCtl,0,sizeof(XLogCtlData));
@@ -7595,11 +7600,6 @@ InitXLOGAccess(void)
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ThisTimeLineID=XLogCtl->ThisTimeLineID;
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Assert(ThisTimeLineID!=0||IsBootstrapProcessingMode());
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7598-
/* Initialize our copy of WALInsertLocks and register the tranche */
7599-
WALInsertLocks=XLogCtl->Insert.WALInsertLocks;
7600-
LWLockRegisterTranche(XLogCtl->Insert.WALInsertLockTrancheId,
7601-
&XLogCtl->Insert.WALInsertLockTranche);
7602-
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/* Use GetRedoRecPtr to copy the RedoRecPtr safely */
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(void)GetRedoRecPtr();
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}

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