On Tue, Aug 15, 2017 at 7:31 AM, Amit Kapila <amit.kapil...@gmail.com> wrote:
> On Tue, Aug 15, 2017 at 8:22 AM, Noah Misch <n...@leadboat.com> wrote:
>> On Fri, Aug 11, 2017 at 11:59:14AM -0400, Tom Lane wrote:
>>> "Adam, Etienne (Nokia-TECH/Issy Les Moulineaux)" <etienne.a...@nokia.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.

Committed.

I believe that between this commit and the test-coverage commit from
Andres, this open item is reasonably well addressed.  If someone
thinks more needs to be done, please specify.  Thanks.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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