Re: [HACKERS] pg_serial early wraparound

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От Tom Lane
Тема Re: [HACKERS] pg_serial early wraparound
Дата
Msg-id 31151.1522083000@sss.pgh.pa.us
обсуждение исходный текст
Ответ на Re: [HACKERS] pg_serial early wraparound  (Thomas Munro <thomas.munro@enterprisedb.com>)
Ответы Re: [HACKERS] pg_serial early wraparound  (Thomas Munro <thomas.munro@enterprisedb.com>)
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Thomas Munro <thomas.munro@enterprisedb.com> writes:
> Rebased again, now with a commit message.  That assertion has since
> been removed (commit ec99dd5a) so the attached test script can once
> again be used to see the contents of pg_serial as the xid goes all the
> way around, if you build with TEST_OLDSERXID defined so that
> predicate.c forces information about xids out to pg_serial.

Couple thoughts here ---

Seems like if the patch is correct as-is, then the OldSerXidPage
macro could be simplified, as the modulo no longer does anything.
Also, OldSerXidSegment doesn't seem to be used.

I'm a little worried because Anastasia couldn't repeat the test;
why is that?

            regards, tom lane


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