Horton

Re: pgsql: Fix parallel index and index-only scans to fall back to serial.

Heikki Linnakangas <hlinnaka@iki.fi>

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From: Heikki Linnakangas <hlinnaka@iki.fi>
To: Robert Haas <rhaas@postgresql.org>, pgsql-hackers <pgsql-hackers@postgresql.org>, Amit Kapila <amit.kapila16@gmail.com>
Date: 2018-07-13T19:22:42Z
Lists: pgsql-hackers 
Hi!

I just bumped into this comment, from commit 09529a70bb5, and I can't 
make sense of it:

> +               /*
> +                * We reach here if the index only scan is not parallel, or if we're
> +                * executing a index only scan that was intended to be parallel
> +                * serially.
> +                */

What was that intended to say?

- Heikki

Commits

  1. Rephrase a few comments for clarity.

  2. Fix parallel index and index-only scans to fall back to serial.