Re: Tricky bugs in concurrent index build

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Tricky bugs in concurrent index build
Date: 2006-08-22 20:01:07
Message-ID: 44EB6283.70101@commandprompt.com
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>
>> Wow, that seems pretty unsatisfactory, all the waiting and locking sounds
>> awful.
>
> Yeah, I'm very unhappy. The whole idea may be going down in flames :-(
> It's fairly clear that we could support concurrent builds of nonunique
> indexes, but is that enough of a use-case to justify it?

I believe there would be. Most PostgreSQL users I run into, develop in
production, which means being able to add an index they forgot when
doing query analysis.

Most of the time (I would say >95%) this is not a unique index.

Sincerely,

Joshua D. Drake

>
> regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match
>

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