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Diffstat (limited to 'src/backend/commands/cluster.c')
| -rw-r--r-- | src/backend/commands/cluster.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c index 10ec32c05de..ff228b7d531 100644 --- a/src/backend/commands/cluster.c +++ b/src/backend/commands/cluster.c @@ -1398,6 +1398,12 @@ finish_heap_swap(Oid OIDOldHeap, Oid OIDNewHeap, * advantage to the other order anyway because this is all transactional, * so no chance to reclaim disk space before commit. We do not need a * final CommandCounterIncrement() because reindex_relation does it. + * + * Note: because index_build is called via reindex_relation, it will never + * set indcheckxmin true for the indexes. This is OK even though in some + * sense we are building new indexes rather than rebuilding existing ones, + * because the new heap won't contain any HOT chains at all, let alone + * broken ones, so it can't be necessary to set indcheckxmin. */ reindex_flags = REINDEX_REL_SUPPRESS_INDEX_USE; if (check_constraints) |