From: | tgl(at)svr1(dot)postgresql(dot)org (Tom Lane) |
---|---|
To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Avoid redundant relation lock grabs during planning, and make |
Date: | 2005-05-23 03:01:14 |
Message-ID: | 20050523030114.CCA0652880@svr1.postgresql.org |
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Lists: | pgsql-committers |
Log Message:
-----------
Avoid redundant relation lock grabs during planning, and make sure
that we acquire a lock on relations added to the query due to inheritance.
Formerly, no such lock was held throughout planning, which meant that
a schema change could occur to invalidate the plan before it's even
been completed.
Modified Files:
--------------
pgsql/src/backend/optimizer/prep:
preptlist.c (r1.75 -> r1.76)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/prep/preptlist.c.diff?r1=1.75&r2=1.76)
pgsql/src/backend/optimizer/util:
plancat.c (r1.107 -> r1.108)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/plancat.c.diff?r1=1.107&r2=1.108)
relnode.c (r1.65 -> r1.66)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/relnode.c.diff?r1=1.65&r2=1.66)
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