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1 parent b6d8d20 commit 9b8ed0fCopy full SHA for 9b8ed0f
src/backend/utils/cache/relmapper.c
@@ -1030,12 +1030,13 @@ relmap_redo(XLogReaderState *record)
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* preserve files, either.
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*
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* There shouldn't be anyone else updating relmaps during WAL replay,
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- * so we don't bother to take the RelationMappingLock. We would need
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- * to do so if load_relmap_file needed to interlock against writers.
+ * but grab the lock to interlock against load_relmap_file().
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*/
+ LWLockAcquire(RelationMappingLock, LW_EXCLUSIVE);
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write_relmap_file((xlrec->dbid == InvalidOid), &newmap,
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false, true, false,
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xlrec->dbid, xlrec->tsid, dbpath);
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+ LWLockRelease(RelationMappingLock);
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pfree(dbpath);
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}
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