diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c index 6f87170946c..46b41c17d21 100644 --- a/src/backend/commands/cluster.c +++ b/src/backend/commands/cluster.c @@ -873,6 +873,12 @@ copy_heap_data(Oid OIDNewHeap, Oid OIDOldHeap, Oid OIDOldIndex, if (TransactionIdPrecedes(FreezeXid, OldHeap->rd_rel->relfrozenxid)) FreezeXid = OldHeap->rd_rel->relfrozenxid; + /* + * MultiXactCutoff, similarly, shouldn't go backwards either. + */ + if (MultiXactIdPrecedes(MultiXactCutoff, OldHeap->rd_rel->relminmxid)) + MultiXactCutoff = OldHeap->rd_rel->relminmxid; + /* return selected values to caller */ *pFreezeXid = FreezeXid; *pCutoffMulti = MultiXactCutoff;