Re: [postgresql 10 beta3] unrecognized node type: 90

On Tue, Aug 15, 2017 at 8:22 AM, Noah Misch <noah(at)leadboat(dot)com> wrote:
> On Fri, Aug 11, 2017 at 11:59:14AM -0400, Tom Lane wrote:
>> "Adam, Etienne (Nokia-TECH/Issy Les Moulineaux)" <etienne(dot)adam(at)nokia(dot)com> writes:
>> > ERROR: XX000: unrecognized node type: 90
>> > LOCATION: ExecReScan, execAmi.c:284
>>
>> (gdb) p (NodeTag) 90
>> $1 = T_GatherMergeState
>>
>> So, apparently somebody wrote ExecReScanGatherMerge, but never bothered
>> to plug it into ExecReScan.

Attached patch fixes the issue for me. I have locally verified that
the gather merge gets executed in rescan path. I haven't added a test
case for the same as having gather or gather merge on the inner side
of join can be time-consuming. However, if you or others feel that it
is important to have a test to cover this code path, then I can try to
produce one.

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