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Data Bases > Pgsql Bugs > Re: Patch for L...
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Re: Patch for LISTEN/NOTIFY race condition?

by tgl@[EMAIL PROTECTED] (Tom Lane) Apr 22, 2008 at 05:39 PM

Alvaro Herrera <alvherre@[EMAIL PROTECTED]
> writes:
> Meetesh Karia wrote:
>> After upgrading to 8.3 and Slony 1.2.13, one of our im****t processes  
>> started constantly failing because of deadlock.  Our im****t process  
>> (pl/pgsql function) just uses COPY FROM to populate a temp table and  
>> then inserts from that (without any special locks, etc).  And, the  
>> deadlock error showed that the im****t process was waiting on sl_event  
>> and a slon process was waiting on pg_listener.
>> 
>> I found the following thread in the archives:  
>> http://archives.postgresql.org/pgsql-bugs/2008-03/msg00117.php
and it  
>> seemed like it could be the cause of the problem.
>> 
>> Is the patch available anywhere?  Also, if it will be available in  
>> 8.3.2, is there any information on when that will be released?

> Hmm, AFAICS the patch should be present on 8.3.1, because it was tagged
> on March 14th and the patch was committed on March 12.

Yes, but in any case (a) that's about a race condition not a deadlock,
and (b) the issue has been there since forever, so it is unlikely to
explain or fix a problem that you weren't seeing before 8.3.

			regards, tom lane

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 4 Posts in Topic:
Patch for LISTEN/NOTIFY race condition?
meetesh.karia@[EMAIL PROT  2008-04-22 20:25:30 
Re: Patch for LISTEN/NOTIFY race condition?
alvherre@[EMAIL PROTECTED  2008-04-22 16:20:51 
Re: Patch for LISTEN/NOTIFY race condition?
tgl@[EMAIL PROTECTED] (T  2008-04-22 17:39:13 
Re: Patch for LISTEN/NOTIFY race condition?
meetesh.karia@[EMAIL PROT  2008-04-23 10:04:26 

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