Re: Autovacuum deadlock - bug or not? - Mailing list pgsql-bugs

From Mikael Carneholm
Subject Re: Autovacuum deadlock - bug or not?
Date
Msg-id 7F10D26ECFA1FB458B89C5B4B0D72C2B088216@sesrv12.wirelesscar.com
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In response to Autovacuum deadlock - bug or not?  ("Mikael Carneholm" <Mikael.Carneholm@WirelessCar.com>)
Responses Re: Autovacuum deadlock - bug or not?  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-bugs
oops, you're right.

dfol=3D> select pgc.oid, pgc.relname from pg_class pgc where pgc.oid in (68=
950, 68122);
  oid  |         relname=20=20=20=20=20=20=20=20=20=20
-------+--------------------------
 68950 | vehicle_unit_data_200407
 68122 | vehicle_unit_data_200301

NOTICE:  Clustering idx_vehicle_unit_data_200407_person_information__id on =
vehicle_unit_data_200407
ERROR:  deadlock detected
DETAIL:  Process 29022 waits for AccessExclusiveLock on relation 68950 of d=
atabase 16390; blocked by process 15865.
Process 15865 waits for AccessShareLock on relation 68122 of database 16390=
; blocked by process 29022.

So it seems that it was the clustering of idx_vehicle_unit_data_200407_pers=
on_information__id on vehicle_unit_data_200407 that caused the deadlock.


-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: den 17 november 2005 16:53
To: Mikael Carneholm
Cc: pgsql-bugs@postgresql.org
Subject: Re: [BUGS] Autovacuum deadlock - bug or not?=20


"Mikael Carneholm" <Mikael.Carneholm@WirelessCar.com> writes:
> Unfortunately, relfilenodes 68950 and 68122 don't exist anymore,

You should be looking at pg_class.oid, not relfilenode.

            regards, tom lane

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