Hello, Please look at errors, which produced by the following script, starting from 6566133c5: for i in `seq 100`; do (echo "CREATE USER u; DROP USER u;"); done | psql >psql-1.log 2>&1 & for i in `seq 100`; do (echo "CREATE USER u; DROP USER u;"); done | psql >psql-2.log 2>&1 & wait
ERROR: could not find tuple for role 16387 ERROR: could not find tuple for role 16390 ERROR: could not find tuple for role 16394 ... Maybe these errors are expected, but then I'm confused by the comment in DropRole(): /* * Re-find the pg_authid tuple. * * Since we've taken a lock on the role OID, it shouldn't be possible * for the tuple to have been deleted -- or for that matter updated -- * unless the user is manually modifying the system catalogs. */ tuple = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid)); if (!HeapTupleIsValid(tuple)) elog(ERROR, "could not find tuple for role %u", roleid); Best regards, Alexander
