Re: [HACKERS] multivariate statistics (v19)

On Tue, Dec 13, 2016 at 3:20 AM, Tomas Vondra
<tomas.vondra@2ndquadrant.com> wrote:
> attached is v21 of the patch series, rebased to current master (resolving
> the duplicate OID and a few trivial merge conflicts), and also fixing some
> of the issues you reported.

I wanted to test the grouping estimation behaviour with TPCH, While
testing I found some crash so I thought of reporting it.

My setup detail:
TPCH scale factor : 5
Applied all the patch for 21 series, and ran below queries.

postgres=# analyze part;
ANALYZE
postgres=# CREATE STATISTICS s2  WITH (ndistinct) on (p_brand, p_type,
p_size) from part;
CREATE STATISTICS
postgres=# analyze part;
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.

I think it should be easily reproducible, in case it's not I can send
call stack or core dump.

-- 
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com