Re: pg_receivexlog --status-interval add fsync feedback

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От Simon Riggs
Тема Re: pg_receivexlog --status-interval add fsync feedback
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Msg-id CA+U5nMLv6Oen25qkNCje4+++=UMaL79nbw1UMCuA9gFBGApeRg@mail.gmail.com
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Ответ на Re: pg_receivexlog --status-interval add fsync feedback  (Fujii Masao <masao.fujii@gmail.com>)
Ответы Re: pg_receivexlog --status-interval add fsync feedback
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On 23 October 2014 15:39, Fujii Masao <masao.fujii@gmail.com> wrote:

> Sorry, I'm going around in the circle. But I'd like to say again, I don't think
> this is good idea. It prevents asynchronous pg_receivexlog from fsyncing
> WAL data and sending feedbacks more frequently at all. They are useful,
> for example, when we want to monitor the write location of asynchronous
> pg_receivexlog in almost realtime. But if we adopt the idea, since feedback
> cannot be sent soon in async mode, pg_stat_replication always returns
> the not-up-to-date location.

Why not send a message every 10 seconds when its not sync rep?

-- Simon Riggs                   http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services



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