diff options
Diffstat (limited to 'src/backend/replication/logical/slotsync.c')
| -rw-r--r-- | src/backend/replication/logical/slotsync.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/backend/replication/logical/slotsync.c b/src/backend/replication/logical/slotsync.c index ad0fc6a04b6..5074c8409f7 100644 --- a/src/backend/replication/logical/slotsync.c +++ b/src/backend/replication/logical/slotsync.c @@ -488,6 +488,10 @@ synchronize_one_slot(RemoteSlot *remote_slot, Oid remote_dbid) latestFlushPtr = GetStandbyFlushRecPtr(NULL); if (remote_slot->confirmed_lsn > latestFlushPtr) { + /* + * Can get here only if GUC 'standby_slot_names' on the primary server + * was not configured correctly. + */ ereport(AmLogicalSlotSyncWorkerProcess() ? LOG : ERROR, errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE), errmsg("skipping slot synchronization as the received slot sync" @@ -857,6 +861,13 @@ validate_remote_info(WalReceiverConn *wrconn) remote_in_recovery = DatumGetBool(slot_getattr(tupslot, 1, &isnull)); Assert(!isnull); + /* + * Slot sync is currently not supported on a cascading standby. This is + * because if we allow it, the primary server needs to wait for all the + * cascading standbys, otherwise, logical subscribers can still be ahead + * of one of the cascading standbys which we plan to promote. Thus, to + * avoid this additional complexity, we restrict it for the time being. + */ if (remote_in_recovery) ereport(ERROR, errcode(ERRCODE_FEATURE_NOT_SUPPORTED), |