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Re: BUG #12990: Missing pg_multixact/members files (appears to have wrapped, then truncated) - Mailing list pgsql-bugs

From Alvaro Herrera
Subject Re: BUG #12990: Missing pg_multixact/members files (appears to have wrapped, then truncated)
Date
Msg-id 20150424015905.GO4369@alvh.no-ip.org
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In response to Re: BUG #12990: Missing pg_multixact/members files (appears to have wrapped, then truncated)  (Thomas Munro <thomas.munro@enterprisedb.com>)
Responses Re: BUG #12990: Missing pg_multixact/members files (appears to have wrapped, then truncated)  (Robert Haas <robertmhaas@gmail.com>)
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Thomas Munro wrote:

> That's why I proposed not using xid-like logic, and instead using a
> type of three-way comparison that allows you to see when nextOffset
> would 'cross' oldestOffsetStopLimit, instead of the two-way comparison
> that considers half the number-space to be in the past and half in the
> future, in my earlier message.

Yeah, that bit made sense to me.

--
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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