Re: APR 1.0 released

"Querying the Internet with PIER" is an interesting recent paper.

Authored at Berkeley -- same spawning grounds as PostgreSQL.
;-)

Authors:
Ryan Huebsch, Joseph M. Hellerstein, Nick Lanham, Boon Thau Loo, Scott
Shenker, Ion Stoica

> -----Original Message-----
> From: pgsql-hackers-owner@postgresql.org
> [mailto:pgsql-hackers-owner@postgresql.org] On Behalf Of
> Sailesh Krishnamurthy
> Sent: Friday, October 08, 2004 5:00 PM
> To: Mike Rylander
> Cc: pgsql-hackers@postgresql.org
> Subject: Re: [HACKERS] APR 1.0 released
>
>
>
> IMHO the best references to parallelizing query plans are in
> the Volcano papers. The Exchange operator is a really clean
> abstraction - the idea is to place the Exchange operator in
> query plans and that way you don't have to paralellize any
> other operator. Exchange takes care of managing the IPC
> queues and also worries about whether or not you have to,
> say, "rehash the data", or "broadcast the data to all other
> processes" or "direct the data to a single node" ...
>
> I'd suggest reading the following paper:
>
> "Encapsulation of parallelism in the Volcano query processing system"
>
> By Goetz Graefe in SIGMOD 1990.
>
> Link: http://portal.acm.org/citation.cfm?id=98720
>
> The above link also has references to Gamma but I really like
> the exposition in the Volcano/Exchange work much better.
>
> --
> Pip-pip
> Sailesh
> http://www.cs.berkeley.edu/~sailesh
>
>
>
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