Re: Question about ALTER TABLE DROP CONSTRAINT on 9.1 -- psql crashes - Mailing list pgsql-admin

From Greg Williamson
Subject Re: Question about ALTER TABLE DROP CONSTRAINT on 9.1 -- psql crashes
Date
Msg-id 1344558910.70207.YahooMailNeo@web125906.mail.ne1.yahoo.com
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In response to Re: Question about ALTER TABLE DROP CONSTRAINT on 9.1 -- psql crashes  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Question about ALTER TABLE DROP CONSTRAINT on 9.1 -- psql crashes
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Tom --


<...>

> WTF?  That should certainly not happen.  Have you perhaps got a script
> that runs around sending SIGTERM to backends that it thinks are blocking
> something?  Does anything show up in the postmaster log when this
> happens?

No, we have processes that kill IDLE IN TRANSACTIONs ruthlessly, but nothing that kills any other processes. There is an outside chance that this ran at just the same time that a cronjob ran the REINDEX command for the table (unlikely but I am going to shut off the cronjob and try this again).

It does not log an ERROR to the log file; I can wade intio the log and see what else it says but it will take a little while (about 800 megs per hour) to answer that.


Thanks, and I'll report back soon.

Greg
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