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.

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

Attachment: execrescan_gathermerge_v1.patch
Description: Binary data

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