On Tue, Oct 28, 2014 at 10:22 AM, Simon Riggs <si...@2ndquadrant.com> wrote:
> Or put it another way, it will be easier to write new index AMs
> because we'll be able to skip the WAL part until we know we want it.

I like the feature you are proposing, but I don't think that we should
block Alexander from moving forward with a more-extensible WAL format.
I believe that's a general need even if we get the features you're
proposing, which would reduce the need for it.  After all, if somebody
builds an out-of-core index AM, ignoring WAL-logging, and then decides
that it works well enough that they want to add WAL-logging, I think
we should make that possible without requiring them to move the whole
thing in-core.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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