postgres-xc-general Mailing List for Postgres-XC

Sent from my iPhone

> On 12-May-2014, at 8:51 pm, Aaron Jackson <aja...@re...> wrote:
> 
> This morning I came in and connected to my coordinator.  I issued a query to count table A and this succeeded.  I then asked it to count table B and it failed with "Failed to get pooled connections" - I did an explain on both tables and this is what it told me..
> 
> explain select count(*) from tableA;
> 
>  Aggregate  (cost=2.50..2.51 rows=1 width=0)
>    ->  Data Node Scan on "__REMOTE_GROUP_QUERY__"  (cost=0.00..0.00 rows=1000 width=0)
>          Node/s: node_pgs01_1, node_pgs02_1, node_pgs03_1
> (3 rows)
> 
> explain select count(*) from tableB;
> 
>  Aggregate  (cost=2.50..2.51 rows=1 width=0)
>    ->  Data Node Scan on "__REMOTE_GROUP_QUERY__"  (cost=0.00..0.00 rows=1000 width=0)
>          Node/s: node_pgs01_1, node_pgs01_1, node_pgs02_1, node_pgs01_1, node_pgs03_1, node_pgs01_1
> (3 rows)
> 
> I've seen this twice now, so I figured that maybe the pool needed to be reloaded... so I issued pgxc_pool_reload() but that did not help.  Restarting the coordinator did not change anything, so it appears to be that the metadata for table B is bad?  No nodes have been added or removed since this table was created.
> 
> Any thoughts?
> 

Did you check if all the nodes are running fine ?

Thanks,
Pavan

> Aaron
> ------------------------------------------------------------------------------
> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> Instantly run your Selenium tests across 300+ browser/OS combos.
> Get unparalleled scalability from the best Selenium testing platform available
> Simple to use. Nothing to install. Get started now for free."
> http://p.sf.net/sfu/SauceLabs
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general

This morning I came in and connected to my coordinator.  I issued a query to count table A and this succeeded.  I then asked it to count table B and it failed with "Failed to get pooled connections" - I did an explain on both tables and this is what it told me..

explain select count(*) from tableA;

 Aggregate  (cost=2.50..2.51 rows=1 width=0)
   ->  Data Node Scan on "__REMOTE_GROUP_QUERY__"  (cost=0.00..0.00 rows=1000 width=0)
         Node/s: node_pgs01_1, node_pgs02_1, node_pgs03_1
(3 rows)

explain select count(*) from tableB;

 Aggregate  (cost=2.50..2.51 rows=1 width=0)
   ->  Data Node Scan on "__REMOTE_GROUP_QUERY__"  (cost=0.00..0.00 rows=1000 width=0)
         Node/s: node_pgs01_1, node_pgs01_1, node_pgs02_1, node_pgs01_1, node_pgs03_1, node_pgs01_1
(3 rows)

I've seen this twice now, so I figured that maybe the pool needed to be reloaded... so I issued pgxc_pool_reload() but that did not help.  Restarting the coordinator did not change anything, so it appears to be that the metadata for table B is bad?  No nodes have been added or removed since this table was created.

Any thoughts?

Aaron