Correctly track XID obtained by autovac as one from the GTM

We were observing that a transaction started by the autovac process was left
open on the GTM, thus holding back xmin. This must have been a regression after
recent changes to track autocommit and regular transactions. We now correctly
track and close such transactions on the GTM.

diff --git a/src/backend/access/transam/gtm.c b/src/backend/access/transam/gtm.c
index e8b793d6fafc886f667018574bc6d07fe7b6c0f6..e6c489f3b86e1c7b3fc7a7d0787005e7cd335308 100644 (file)
--- a/src/backend/access/transam/gtm.c
+++ b/src/backend/access/transam/gtm.c
@@ -200,6 +200,8 @@ BeginTranAutovacuumGTM(void)
                if (conn)
                        xid =  begin_transaction_autovacuum(conn, GTM_ISOLATION_RC);
        }
+       if (xid)
+               IsXidFromGTM = true;
        currentGxid = xid;
 
        elog(DEBUG3, "BeginTranGTM - %d", xid);