On 01/03/2017 02:42 PM, Dilip Kumar wrote:
On Tue, Dec 13, 2016 at 3:20 AM, Tomas Vondra
<tomas.von...@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.
Thanks for the report. It was trivial to reproduce and it turned out to
be a fairly simple bug. Will send a new version of the patch soon.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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