Re: [HACKERS] StandbyRecoverPreparedTransactions recovers subtranslinks incorrectly

On 23 April 2017 at 18:41, Simon Riggs <simon@2ndquadrant.com> wrote:
> On 23 April 2017 at 17:17, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Simon Riggs <simon@2ndquadrant.com> writes:
>>>> Also, when I fix that, it gets further but still crashes at the same
>>>> Assert in SubTransSetParent.  The proximate cause this time seems to be
>>>> that RecoverPreparedTransactions's calculation of overwriteOK is wrong:
>>>> it's computing that as "false", but in reality the subtrans link in
>>>> question has already been set.
>>
>>> Not sure about that, investigating.
>>
>> As a quick hack, I just hotwired RecoverPreparedTransactions to set
>> overwriteOK = true always, and with that and the SubTransSetParent
>> argument-order fix, HEAD passes the recovery tests.  Maybe we can
>> be smarter than that, but this might be a good short-term fix to get
>> the buildfarm green again.
>
> That would work. I've been looking into a fix I can explain, but "do
> it always" may actually be it.
>
> OK, I'll do that.

Done, tests pass again for me now.

-- 
Simon Riggs                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services