diff --git a/src/bin/pg_basebackup/pg_createsubscriber.c b/src/bin/pg_basebackup/pg_createsubscriber.c
index 9628f32a3e..fdb3e92aa3 100644
--- a/src/bin/pg_basebackup/pg_createsubscriber.c
+++ b/src/bin/pg_basebackup/pg_createsubscriber.c
@@ -919,6 +919,9 @@ create_logical_replication_slot(PGconn *conn, LogicalRepInfo *dbinfo,
 
 	pg_log_info("creating the replication slot \"%s\" on database \"%s\"", slot_name, dbinfo->dbname);
 
+	pg_log_info("XXX: sleep 20s");
+	sleep(20);
+
 	appendPQExpBuffer(str, "SELECT lsn FROM pg_create_logical_replication_slot('%s', '%s', %s, false, false)",
 					  slot_name, "pgoutput", temporary ? "true" : "false");