[Postgres-xc-general] drop user get wrong, it shows "Failed to get pooled connections", involving create node

[Lin W. <lin...@gm...>]

Hi,
      first I create user1 then use user1 create a node;   seceond, I use
'set role wln' to return the user of the superuser of  cluster; last , I
want to use 'drop user user1;' to drop the user1, but it shows "Failed to
get pooled connections". (use postgres-xc1.1).
the detailed content as below:
[wln@localhost pgxc]$ psql -d postgres -p 5300
psql (9.3beta2, server 9.2.4)
Type "help" for help.

postgres=# create user user1 with SUPERUSER;
CREATE ROLE
postgres=# set role user1;
SET
postgres=# create node node100
with(type='datanode',host=localhost,port=7809);
CREATE NODE
postgres=# set role wln;
SET
postgres=# drop user user1;
DROP ROLE
postgres=# create user user1 with SUPERUSER;
CREATE ROLE
postgres=# set role user1;
SET
postgres=# \c postgres
psql (9.3beta2, server 9.2.4)
You are now connected to database "postgres" as user "wln".
postgres=#  drop user user1;
ERROR:  Failed to get pooled connections
postgres=# select oid, * from pgxc_node;
  oid  |  node_name   | node_type | node_port | node_host | nodeis_primary
| nodeis_preferred |  node_id
-------+--------------+-----------+-----------+-----------+----------------+------------------+------------
 16384 | datanode1    | D         |      5302 | localhost | f
 | f                |  888802358
 16385 | datanode2    | D         |      5304 | localhost | f
 | f                | -905831925
 16386 | coordinator1 | C         |      5300 | localhost | f
 | f                | 1938253334
 16388 | node100      | D         |      7809 | localhost | f
 | f                | 1668042070
(4 rows)

log:
2014-03-01 06:39:18.543 CST 53111016.6fe0 postgres 28640 psql 0 00000DEBUG:
 [re]setting xid = 0, old_value = 0
2014-03-01 06:39:18.545 CST 53110fe1.6fd1 postgres 28625 psql 0 00000DEBUG:
 Postmaster child: connection to GTM closed
2014-03-01 06:39:25.370 CST 53111016.6fe0 postgres 28640 psql 0 00000DEBUG:
 Postmaster child: connection established to GTM with string host=localhost
port=5307 node_name=coordinator1
2014-03-01 06:39:25.371 CST 53111016.6fe0 postgres 28640 psql 0 00000DEBUG:
 Assigned new transaction ID from GTM = 10014
2014-03-01 06:39:25.371 CST 53111016.6fe0 postgres 28640 psql 10014
00000DEBUG:  Getting snapshot. Current XID = 10014
2014-03-01 06:39:25.372 CST 53111016.6fe0 postgres 28640 psql 10014
00000DEBUG:  from GTM: xmin = 10014, xmax = 10014, xcnt = 0, RecGlobXmin =
10014
2014-03-01 06:39:25.394 CST 53110fd8.6fac  28588  0 08006LOG:  failed to
connect to Datanode
2014-03-01 06:39:25.394 CST 53110fd8.6fac  28588  0 01000WARNING:  can not
connect to node 16388
2014-03-01 06:39:25.394 CST 53111016.6fe0 postgres 28640 psql 10014
53000LOG:  failed to acquire connections
2014-03-01 06:39:25.394 CST 53111016.6fe0 postgres 28640 psql 10014
53000STATEMENT:  drop user user1;
2014-03-01 06:39:25.394 CST 53111016.6fe0 postgres 28640 psql 10014
53000ERROR:  Failed to get pooled connections
2014-03-01 06:39:25.394 CST 53111016.6fe0 postgres 28640 psql 10014
53000STATEMENT:  drop user user1;
2014-03-01 06:39:25.394 CST 53111016.6fe0 postgres 28640 psql 10014
00000DEBUG:  Record transaction abort 10014
2014-03-01 06:39:25.395 CST 53111016.6fe0 postgres 28640 psql 10014
00000DEBUG:  [re]setting xid = 0, old_value = 0
2014-03-01 06:40:16.315 CST 53110fd8.6fba  28602  0 00000DEBUG:  Autovacuum
launcher: connection established to GTM with string host=localhost
port=5307 node_name=coordinator1


Thanks
waln