Re: WAL-support for Pluggable Indexes

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: WAL-support for Pluggable Indexes
Date: 2010-02-21 18:14:00
Message-ID: 26134.1266776040@sss.pgh.pa.us
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Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> We already have a pluggable index API, but not one that supports
> recoverability.

> It is a simple patch to add recoverability to the index API, if we have
> the will to do so.

I suggest you go re-read the archives before asserting this is a simple
no-thought-required fix. If it were, it'd have been done before.

The killer problem as I recall it is how to identify the plugin rmgrs
to use, bearing in mind that you can't rely on looking at the catalogs.
We don't have a design for that, and I don't want one that's been thrown
together under intense schedule pressure.

regards, tom lane

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