Re: [HACKERS] Index recreation in vacuum

> > I heard from someone that old vacuum had been like so.
> > Probably 2x disk space for big tables was a big disadvantage.
> 
> Yes, It is critical.
> 
> How about sequence like this:
> 
> * Drop indices (keeping somewhere index descriptions)
> * vacuuming table
> * recreate indices
> 
> If something crash, user have been noticed 
> to re-run vacuum or recreate indices by hand 
> when system restarts.
> 
> I use script like described above for vacuuming
>  - it really increase vacuum performance for large table.

We need two things:
auto-create index on startupallow vacuum to run only if number of tuples superceeded > X %

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