Re: Parallel Seq Scan

On Mon, Nov 16, 2015 at 9:49 PM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>> I don't understand this part.
>>
>
> The code in question is as below:
>
> tqueueReceiveSlot(TupleTableSlot *slot, DestReceiver *self)
>
> {
> ..
>
> if (tqueue->tupledesc != tupledesc ||
>
> tqueue->remapinfo->natts != tupledesc->natts)
>
> {
>
> if (tqueue->remapinfo != NULL)
>
> pfree(tqueue->remapinfo);
>
> tqueue->remapinfo = BuildRemapInfo(tupledesc);
>
> }
>
> ..
> }
>
> Here the above check always passes as tqueue->tupledesc is not
> set due to which it always try to build remap info. Is there any reason
> for doing so?

Groan. The problem here is that tqueue->tupledesc never gets set. I
think this should be fixed as in the attached.

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