Re: Freeze avoidance of very large table.

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От Simon Riggs
Тема Re: Freeze avoidance of very large table.
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Msg-id CANP8+j+=rMz8_-zAaJv_cKTHHAaye7s+SpMpVDVXbqVGDb-KEA@mail.gmail.com
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Ответ на Re: Freeze avoidance of very large table.  (Sawada Masahiko <sawada.mshk@gmail.com>)
Ответы Re: Freeze avoidance of very large table.  (Sawada Masahiko <sawada.mshk@gmail.com>)
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On 2 July 2015 at 16:30, Sawada Masahiko <sawada.mshk@gmail.com> wrote:
 
Also, the flags of each heap page header might be set PD_ALL_FROZEN,
as well as all-visible

Is it possible to have VM bits set to frozen but not visible?

The description makes those two states sound independent of each other.

Are they? Or not? Do we test for an impossible state?

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

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