Re: Proposal for 9.1: WAL streaming from WAL buffers - Mailing list pgsql-hackers

From marcin mank
Subject Re: Proposal for 9.1: WAL streaming from WAL buffers
Date
Msg-id AANLkTim_kUfYXzvnlR5u_qhA5cHeaYvJFAdUaxssdRyb@mail.gmail.com
Whole thread Raw
In response to Re: Proposal for 9.1: WAL streaming from WAL buffers  (Robert Haas <robertmhaas@gmail.com>)
List pgsql-hackers
> Having said that, I do think we urgently need some high-level design
> discussion on how sync rep is actually going to handle this issue
> (perhaps on a new thread).  If we can't resolve this issue, sync rep
> is going to be really slow; but there are no easy solutions to this
> problem in sight, so if we want to have sync rep for 9.1 we'd better
> agree on one of the difficult solutions soon so that work can begin.
>

When standbys reconnect after a crash, they could send the
ahead-of-the-master WAL to the master. This is an alternative to
choosing the most-ahead standby as the new master, as suggested
elsewhere.

Greetings
Marcin Mańk


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