Re: Avoid full page images in streaming replication?

On 10/22/15 5:52 PM, Andres Freund wrote:
>> If the receiver didn't write the WAL before processing it then it can just
>> >stick the page image into the WAL it's writing for itself. Probably not good
>> >for syncrep, but I don't think you'd want this on for syncrep anyway.
> To me this sounds like a recipe for disaster (i.e. complex bugs). WAL
> (and thus CRC checksums) differing between nodes. Ugh.

The WAL would *not* differ. This would only affect streaming 
replication, and only the stream itself.
-- 
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
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