Re: Bug in StartupSUBTRANS - Mailing list pgsql-hackers

From Michael Paquier
Subject Re: Bug in StartupSUBTRANS
Date
Msg-id CAB7nPqSfomh1-O1URRph-ObyGAMv=6i5-B4veKBmK-j1-D_XdA@mail.gmail.com
Whole thread Raw
In response to Re: Bug in StartupSUBTRANS  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On Wed, Feb 10, 2016 at 3:45 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Simon Riggs <simon@2ndQuadrant.com> writes:
>> Your patch looks right to me, so I will commit, barring objections... with
>> backpatch. Likely to 9.0, AFAICS.
>
> 9.0 is out of support and should not be patched anymore.
>
> I agree that the patch is basically correct, though I'd personally
> write it without bothering with the extra variable:
>
> +       /* must account for wraparound */
> +       if (startPage > TransactionIdToPage(0xFFFFFFFF))
> +               startPage = 0;
>
> Also, the comment at line 45 is now wrong and needs an addition.

Instead of using a hardcoded value, wouldn't it be better to use
something based on MaxTransactionId?
-- 
Michael



pgsql-hackers by date:

Previous
From: Dilip Kumar
Date:
Subject: Re: Relation extension scalability
Next
From: Michael Paquier
Date:
Subject: Re: process type escape for log_line_prefix