pgsql: Adjust nodeBitmapIndexscan to keep the target index opened from

Started by Tom Laneabout 21 years ago1 messagescomitters

tgl@sss.pgh.pa.us

about 21 years ago

Log Message:
-----------
Adjust nodeBitmapIndexscan to keep the target index opened from plan
startup to end, rather than re-opening it in each MultiExecBitmapIndexScan
call. I had foolishly thought that opening/closing wouldn't be much
more expensive than a rescan call, but that was sheer brain fade.

This seems to fix about half of the performance lossage reported by
Sergey Koposov. I'm still not sure where the other half went.

Modified Files:
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pgsql/src/backend/executor:
nodeBitmapIndexscan.c (r1.7 -> r1.8)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapIndexscan.c.diff?r1=1.7&r2=1.8)
pgsql/src/include/nodes:
execnodes.h (r1.130 -> r1.131)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/execnodes.h.diff?r1=1.130&r2=1.131)