If the version of the master and the slave is different and we'd still
like to allow log shipping replication, we need a negotiation if WAL
format for the two is compatible. I hope it is not in our scope
and I'm worrying too much.
2008/6/5 Tom Lane <tgl@sss.pgh.pa.us>:
> "Koichi Suzuki" <koichi.szk@gmail.com> writes:
>> Well, WAL format doesn't only depend on WAL itself, but also depend on
>> each resource manager. If we introduce WAL format version
>> identification, ISTM that we have to take care of the matching of
>> resource manager in the master and the slave as well.
>
> That seems a bit overdesigned. What are the prospects that two builds
> of the same Postgres version are going to have different sets of
> resource managers in them?
>
> regards, tom lane
>
--
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Koichi Suzuki
