Re: On-disk bitmap index implementation

On Tue, 5 Dec 2006, Heikki Linnakangas wrote:

> Gavin Sherry wrote:
> > o Improving VACUUM support -- currently, VACUUM FULL means REINDEX for
> > bitmaps. Heikki Linnakangas offered to work on this. Heikki, are you
> > still interested?
>
> BTW vacuuming seems quite broken as it is:
>
> hlinnaka(at)heikkilaptop:~/pgsql.bitmap$ ~/pgsql.bitmap/bin/psql -a
> postgres < vacuumtest.sql
> drop table if exists test;
> DROP TABLE
> create table test (key int);
> CREATE TABLE
> create index test_bm on test using bitmap (key);
> CREATE INDEX
> insert into test values (1);
> INSERT 0 1
> delete from test;
> DELETE 1
> vacuum test;
> VACUUM
> insert into test values (2);
> INSERT 0 1
> select * from test where key = 1;
> key
> -----
> 2
> (1 row)

Oops :-).

Thanks for pointing it out. I think I might have busted something merging
with HEAD. Don't you hate that?

Thanks,

Gavin