Re: Parallel Seq Scan - Mailing list pgsql-hackers

From Jeff Davis
Subject Re: Parallel Seq Scan
Date
Msg-id 1435737068.4369.72.camel@jeff-desktop
Whole thread Raw
In response to Re: Parallel Seq Scan  (Amit Kapila <amit.kapila16@gmail.com>)
Responses Re: Parallel Seq Scan  (Kouhei Kaigai <kaigai@ak.jp.nec.com>)
Re: Parallel Seq Scan  (Amit Kapila <amit.kapila16@gmail.com>)
List pgsql-hackers
On Wed, 2015-07-01 at 11:07 +0530, Amit Kapila wrote:

> For what you are asking to change name for?

There are still some places, at least in the comments, that call it a
parallel sequential scan.


> a. Infrastructure for parallel execution, like some of the stuff in
> execparallel.c, heapam.c,tqueue.c, etc and all other generic
> (non-nodes specific) code.

Did you consider passing tuples through the tqueue by reference rather
than copying? The page should be pinned by the worker process, but
perhaps that's a bad assumption to make?

Regards,Jeff Davis





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