Re: Tuple-routing for certain partitioned tables not working as expected

From: Etsuro Fujita <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp>
To: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Tuple-routing for certain partitioned tables not working as expected
Date: 2017-08-21 11:45:55
Message-ID: 949dd1ed-c2db-026c-6ca6-89026e750b8a@lab.ntt.co.jp
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On 2017/08/07 15:45, Etsuro Fujita wrote:
> On 2017/08/07 15:33, Amit Langote wrote:
>> On 2017/08/07 15:22, Etsuro Fujita wrote:
>>> On 2017/08/07 13:11, Amit Langote wrote:> The patch looks good too.
>>> Although, looking at the following hunk:
>>>>
>>>> +         Assert(partrel->rd_rel->relkind == RELKIND_RELATION ||
>>>> +                partrel->rd_rel->relkind == RELKIND_FOREIGN_TABLE);
>>>> +
>>>>             /*
>>>>              * Verify result relation is a valid target for the current
>>>> operation.
>>>>              */
>>>> !         if (partrel->rd_rel->relkind == RELKIND_RELATION)
>>>> !             CheckValidResultRel(partrel, CMD_INSERT);
>>>>
>>>> makes me now wonder if we need the CheckValidResultRel check at
>>>> all.  The
>>>> only check currently in place for RELKIND_RELATION is
>>>> CheckCmdReplicaIdentity(), which is a noop (returns true) for inserts
>>>> anyway.
>>>
>>> Good point!  I left the verification for a plain table because that is
>>> harmless but as you mentioned, that is nothing but an overhead.  So,
>>> here
>>> is a new version which removes the verification at all from
>>> ExecSetupPartitionTupleRouting.
>>
>> The updated patch looks good to me, thanks.
>
> Thanks for the review!

If there are no objections, I'll add this to the open item list for v10.

Best regards,
Etsuro Fujita

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