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Tom Lane db88112ce1 Doc: small improvements for documentation about VACUUM freezing.
Mostly, explain how row xmin's used to be replaced by FrozenTransactionId
and no longer are.  Do a little copy-editing on the side.

Per discussion with Egor Rogov.  Back-patch to 9.4 where the behavioral
change occurred.

Discussion: <575D7955.6060209@postgrespro.ru>
2016-09-06 17:50:53 -04:00
..
2016-08-08 16:29:39 -04:00