Re: Comment in src/backend/commands/vacuumlazy.c

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Amit Langote <amitlangote09(at)gmail(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Comment in src/backend/commands/vacuumlazy.c
Date: 2014-03-31 14:44:08
Message-ID: CA+TgmobcHRgLhabnYVLBX+1VfQBeidUz7mGTHJfzxh=n7djaJQ@mail.gmail.com
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On Mon, Mar 24, 2014 at 12:28 AM, Amit Langote <amitlangote09(at)gmail(dot)com> wrote:
> Hi,
>
> Note the following comment in src/backend/commands/vacuumlazy.c:lazy_scan_heap()
>
> 1088 /* If no indexes, make log report that lazy_vacuum_heap
> would've made */
> 1089 if (vacuumed_pages)
> 1090 ereport(elevel,
>
> Just wondering if it would read better as:
>
> 1088 /* Make the log report that lazy_vacuum_heap would've made
> had there been no indexes */
>
> Is that correct?

No. Your rewrite means the opposite of what the comment means now.
vacuumed_pages will be non-zero only if the relation does NOT have
indexes.

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

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