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I stopped the other two nodes and restarted the instance and pg_locks shows the following.
deliver=# select * from pg_locks; locktype | database | relation | page | tuple | virtualxid | transactionid | classid | objid | objsubid | virtualtransaction | pid | mode | granted | fastpath ------------+----------+----------+------+-------+------------+---------------+---------+-------+----------+--------------------+-------+-----------------+---------+- --------- relation | 533136 | 11189 | | | | | | | | 5/68 | 10229 | AccessShareLock | t | t virtualxid | | | | | 5/68 | | | | | 5/68 | 10229 | ExclusiveLock | t | t (2 rows) -Selim From: pgsql-general-owner@xxxxxxxxxxxxxx [pgsql-general-owner@xxxxxxxxxxxxxx] on behalf of Selim Tuvi [stuvi@xxxxxxx]
Sent: Thursday, December 03, 2015 4:31 PM To: pgsql-general@xxxxxxxxxxxxxx Subject: Re: ALTER statement hanging And I tried running the same statement on another node, while one node was running it and I got the following:
ERROR: database is locked against ddl by another node HINT: Node (6223770712502831127,1,16389) in the cluster is already performing DDL Terminating the statement in one node and running it on another results in a hang as well. -Selim From: Selim Tuvi
Sent: Thursday, December 03, 2015 4:03 PM To: pgsql-general@xxxxxxxxxxxxxx Subject: BDR: ALTER statement hanging Hi, I am running a three node BDR cluster. BDR version is 0.9.3. Postgres version is 9.4.5.
With 0.9.2, I used to be able to issue ALTER statements using psql and it would go through. This time it is just hanging. The statement is this: alter table pts alter column shot drop not null; I also tried to add a column but that hangs as well: alter table pts add column shot_tmp text; Thanks -Selim |
