Horton

Re: Renaming of pg_xlog and pg_clog

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Bruce Momjian <bruce@momjian.us>, Stephen Frost <sfrost@snowman.net>, Michael Paquier <michael.paquier@gmail.com>, David Steele <david@pgmasters.net>, PostgreSQL mailing lists <pgsql-hackers@postgresql.org>
Date: 2016-10-20T18:09:31Z
Lists: pgsql-hackers 
Robert Haas <robertmhaas@gmail.com> writes:
> Is pg_xact actually better than pg_clog?

Yes, because it doesn't contain the three letters "log".

We have the two precedents "pg_subtrans" and "pg_multixact", so
unless we want to get into renaming those too, I think "pg_trans"
and "pg_xact" are really the only options worth considering.

Personally I'd go for "pg_trans", but it's only a weak preference.

			regards, tom lane

Commits

  1. Rename "pg_clog" directory to "pg_xact".

  2. Improve error reporting in pg_upgrade's file copying/linking/rewriting.