Re: BUG #5932: CLUSTER doesn't update n_dead_tup - Mailing list pgsql-bugs

From Bruce Momjian
Subject Re: BUG #5932: CLUSTER doesn't update n_dead_tup
Date
Msg-id 201109061404.p86E4gH16362@momjian.us
Whole thread Raw
In response to Re: BUG #5932: CLUSTER doesn't update n_dead_tup  (Andy Lester <andy@petdance.com>)
Responses Re: BUG #5932: CLUSTER doesn't update n_dead_tup  (Andy Lester <andy@petdance.com>)
List pgsql-bugs
Andy Lester wrote:
>
> On Sep 5, 2011, at 3:19 PM, Bruce Momjian wrote:
>
> >
> > This is an interesting bug report from March that got no replies.  In my
> > testing, not only does CLUSTER not update the n_dead_tup statistics, but
> > neither does VACUUM FULL, which internally uses the CLUSTER code
> > (cluster_rel()).  Is this a bug?
>
> I can't imagine how it NOT be a bug to do something that gets rid of dead tuples and then tell the user there are
deadtuples when there are actually no dead tuples. 

Well, if you TRUNCATE I don't think it updates the statistics either.  I
think we assume the autovacuum system will analyse the new table soon.

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

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