Re: [HACKERS] [COMMITTERS] pgsql: Fix freezing of a dead HOT-updated tuple

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От Peter Geoghegan
Тема Re: [HACKERS] [COMMITTERS] pgsql: Fix freezing of a dead HOT-updated tuple
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Msg-id CAH2-Wzn5U+jE1yuQO9e1o+m=VkO47iEQWx042ra0WyLehtu+Pg@mail.gmail.com
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Ответ на Re: [HACKERS] [COMMITTERS] pgsql: Fix freezing of a dead HOT-updated tuple  (Robert Haas <robertmhaas@gmail.com>)
Список pgsql-hackers
On Thu, Sep 28, 2017 at 3:20 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> On Thu, Sep 28, 2017 at 5:47 PM, Peter Geoghegan <pg@bowt.ie> wrote:
>> In the end, commit 6bfa88a fixed that old recovery bug by making sure
>> the recovery routine heap_xlog_lock() did the right thing. In both
>> cases (Feb 2014 and today), the index wasn't really corrupt -- it just
>> pointed to the root of a HOT chain when it should point to some child
>> tuple (or maybe a successor HOT chain).
>
> Unless I'm very confused, it's really not OK to point at a child tuple
> rather than the root of the HOT chain.

Please see my later clarification.

-- 
Peter Geoghegan


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