[Bucardo-general] Bucardo add sync failed

[张远]

Hello:
       I add a sync on production db failed , the error logs as follows
       WARNING:  Issuing rollback() due to DESTROY without explicit disconnect() of DBD::Pg::db handle dbname=liyan;host=127.0.0.1;port=5436 at line 29.
Failed to add sync: DBD::Pg::st execute failed: ERROR:  DBD::Pg::db do failed: ERROR:  deadlock detected
DETAIL:  Process 33477 waits for AccessExclusiveLock on relation 6680077 of database 1270703; blocked by process 78287.
Process 78287 waits for AccessShareLock on relation 1270891 of database 1270703; blocked by process 33477.
HINT:  See server log for query details. at line 126. at line 30.
CONTEXT:  PL/Perl function "validate_sync" at /usr/bin/bucardo line 4612.

       In my postgresql log I can see “CREATE TRIGGER "bucardo_note_trunc_liyan" 
                  AFTER TRUNCATE ON "public"."bookmark"
                  FOR EACH STATEMENT EXECUTE PROCEDURE bucardo.bucardo_note_truncation('liyan’)”  this sql is blocked by a select sql.
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