Re: [HACKERS] Why do we need pg_vlock?

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От Bruce Momjian
Тема Re: [HACKERS] Why do we need pg_vlock?
Дата
Msg-id 199909182025.QAA18799@candle.pha.pa.us
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Ответ на Why do we need pg_vlock?  (Tom Lane <tgl@sss.pgh.pa.us>)
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> It seems to me there's no fundamental reason why there couldn't be
> two VACUUMs running concurrently in a database.  With the locking
> we are doing now, it should be safe enough.  So, I'd like to propose
> that we get rid of the pg_vlock lock file.  It doesn't have any useful
> purpose but it does force manual intervention by the dbadmin to recover
> if a VACUUM crashes :-(
> 
> Comments?  Did I miss something about why we can't have more than one
> vacuum process?

I vote for removal.  Lock files are hacks, usually.

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