Re: BUG #5443: Undetected deadlock situation

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От Kevin Grittner
Тема Re: BUG #5443: Undetected deadlock situation
Дата
Msg-id 4BDA993702000025000310CD@gw.wicourts.gov
обсуждение исходный текст
Ответ на Re: BUG #5443: Undetected deadlock situation  (Peter Eisentraut <peter_e@gmx.net>)
Ответы Re: BUG #5443: Undetected deadlock situation  (Claudio Freire <claudio@livra.com>)
Re: BUG #5443: Undetected deadlock situation  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-bugs
Peter Eisentraut <peter_e@gmx.net> wrote:

> This is not a deadlock.

Agreed.

> It's just two locks on the same table

Not as I read it.

> (and maybe a bit more readable formatting).

Eliminating null columns and mangling column headers for length, I
get this:

>>   locktype    |  tranid  | virtualx |  pid  |      mode     | gr
>> transactionid | 39773877 | 63/15761 | 11157 | ShareLock     | f
>> transactionid | 39773877 | 4/10902  |  6421 | ExclusiveLock | t

So it looks like two locks on the same transaction ID by different
transactions.  How does that happen?

-Kevin

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