Re: Query Crashes PG 10.3 using partitions, works on 9.6

2018-03-28 Thread Tom Lane
Cory Tucker writes: >> Can you extract a self-contained test case that uses unreasonable amounts >> of memory? It seems from this trace that the wheels are coming off in >> at least two places, but identifying exactly where is impossible without >> more info. > I will try to make a test case. T

Re: Query Crashes PG 10.3 using partitions, works on 9.6

2018-03-28 Thread Cory Tucker
> > You are running the query (DELETE statement) as if the table is not > partitioned which is causing the server to crash. > > Please run that query for each partitions separately in a loop with > dynamic query and you should see the improvement. It should be pretty quick. > > I understand that I

Re: Query Crashes PG 10.3 using partitions, works on 9.6

2018-03-28 Thread Cory Tucker
> > Can you extract a self-contained test case that uses unreasonable amounts > of memory? It seems from this trace that the wheels are coming off in > at least two places, but identifying exactly where is impossible without > more info. > I will try to make a test case. The data in this table i

Re: Query Crashes PG 10.3 using partitions, works on 9.6

2018-03-28 Thread Tom Lane
Cory Tucker writes: > I was issuing a query on both databases to cleanup some duplicates in > preparation of applying new indexes. On the 9.6 database with all the data > in one table, the query runs fine in about 6 min. On 10.3, with a work_mem > setting of 1GB the query runs for about 7 minute

RE: Query Crashes PG 10.3 using partitions, works on 9.6

2018-03-28 Thread Kumar, Virendra
. From: Kumar, Virendra Sent: Wednesday, March 28, 2018 5:57 PM To: Cory Tucker; pgsql-gene...@postgresql.org Subject: RE: Query Crashes PG 10.3 using partitions, works on 9.6 Would be nice if you can attach explain plan of course, explain analyze is not going to work if server is crashing. Regards

RE: Query Crashes PG 10.3 using partitions, works on 9.6

2018-03-28 Thread Kumar, Virendra
Would be nice if you can attach explain plan of course, explain analyze is not going to work if server is crashing. Regards, Virendra From: Cory Tucker [mailto:cory.tuc...@gmail.com] Sent: Wednesday, March 28, 2018 5:49 PM To: pgsql-gene...@postgresql.org Subject: Query Crashes PG 10.3 using pa