Re: [PATCH 02/14] Add support for a generic wal reading facility dubbed XLogReader

From: Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>
To: Andres Freund <andres(at)2ndquadrant(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCH 02/14] Add support for a generic wal reading facility dubbed XLogReader
Date: 2012-11-15 14:22:56
Message-ID: 50A4FAC0.8060108@vmware.com
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On 15.11.2012 03:17, Andres Freund wrote:
>
> Features:
> - streaming reading/writing
> - filtering
> - reassembly of records
>
> Reusing the ReadRecord infrastructure in situations where the code that wants
> to do so is not tightly integrated into xlog.c is rather hard and would require
> changes to rather integral parts of the recovery code which doesn't seem to be
> a good idea.
>
> Missing:
> - "compressing" the stream when removing uninteresting records
> - writing out correct CRCs
> - separating reader/writer

I'm disappointed to see that there has been no progress on this patch
since last commitfest. I thought we agreed on the approach I championed
for here:
http://archives.postgresql.org/pgsql-hackers/2012-09/msg00636.php. There
wasn't much work left to finish that, I believe.

Are you going to continue working on this?

- Heikki

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