| From: | alvherre(at)postgresql(dot)org (Alvaro Herrera) |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Have TRUNCATE advance the affected table's relfrozenxid to |
| Date: | 2007-05-16 17:28:20 |
| Message-ID: | 20070516172820.A050F9FB3FC@postgresql.org |
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| Lists: | pgsql-committers |
Log Message:
-----------
Have TRUNCATE advance the affected table's relfrozenxid to RecentXmin, to
avoid a later needless VACUUM for Xid-wraparound purposes. We can do this
since the table is known to be left empty, so no Xid remains on it.
Per discussion.
Modified Files:
--------------
pgsql/src/backend/catalog:
index.c (r1.282 -> r1.283)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/index.c.diff?r1=1.282&r2=1.283)
pgsql/src/backend/commands:
tablecmds.c (r1.223 -> r1.224)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/tablecmds.c.diff?r1=1.223&r2=1.224)
pgsql/src/include/catalog:
index.h (r1.73 -> r1.74)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/index.h.diff?r1=1.73&r2=1.74)
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