Re: [HACKERS] [POC] Faster processing at Gather node - Mailing list pgsql-hackers

From Amit Kapila
Subject Re: [HACKERS] [POC] Faster processing at Gather node
Date
Msg-id CAA4eK1KKE9EfRVGDUX_=tsJT2378hN3xoo=+pj5Q2M46=5Sc7A@mail.gmail.com
Whole thread Raw
In response to Re: [HACKERS] [POC] Faster processing at Gather node  (Amit Kapila <amit.kapila16@gmail.com>)
Responses Re: [HACKERS] [POC] Faster processing at Gather node  (Robert Haas <robertmhaas@gmail.com>)
List pgsql-hackers
On Fri, Nov 10, 2017 at 9:48 AM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Fri, Nov 10, 2017 at 8:36 AM, Robert Haas <robertmhaas@gmail.com> wrote:
>> On Thu, Nov 9, 2017 at 9:31 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
>>> Have you set force_parallel_mode=regress; before running the
>>> statement?
>>
>> Yes, I tried that first.
>>
>>> If so, then why you need to tune other parallel query
>>> related parameters?
>>
>> Because I couldn't get it to break the other way, I then tried this.
>>
>> Instead of asking me what I did, can you tell me what I need to do?
>> Maybe a self-contained reproducible test case including exactly what
>> goes wrong on your end?
>>
>
> I think we are missing something very basic because you should see the
> failure by executing that statement in force_parallel_mode=regress
> even in a freshly created database.
>

I am seeing the assertion failure as below on executing the above
mentioned Create statement:

TRAP: FailedAssertion("!(!(tup->t_data->t_infomask & 0x0008))", File:
"heapam.c", Line: 2634)
server closed the connection unexpectedly
This probably means the server terminated abnormally


-- 
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com


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