Re: [RFC] CREATE QUEUE (log-only table) for londiste/pgQ ccompatibility

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От Tom Lane
Тема Re: [RFC] CREATE QUEUE (log-only table) for londiste/pgQ ccompatibility
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Msg-id 17539.1351001630@sss.pgh.pa.us
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Ответ на Re: [RFC] CREATE QUEUE (log-only table) for londiste/pgQ ccompatibility  (Hannu Krosing <hannu@2ndQuadrant.com>)
Ответы Re: [RFC] CREATE QUEUE (log-only table) for londiste/pgQ ccompatibility
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[ hadn't been following this thread, sorry ]

Hannu Krosing <hannu@2ndQuadrant.com> writes:
> My RFC was for a proposal to skip writing the unneeded info in local
> tables and put it _only_ in WAL.

This concept seems fundamentally broken.  What will happen if the master
crashes immediately after emitting the WAL record?  It will replay it
locally, that's what, and thus you have uncertainty about whether the
master will contain the data or not.
        regards, tom lane

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