[postgis-devel] [PostGIS] #851: [raster] Numerous ST_Value query cause the memory to grow indefinitely

[PostGIS]

#851: [raster] Numerous ST_Value query cause the memory to grow indefinitely
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 Reporter:  pracine         |       Owner:  pracine      
     Type:  defect          |      Status:  new          
 Priority:  critical        |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
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 A query like this:

 SELECT ST_Value(rast, 1, x, y)
 FROM generate_series(1, 10) x, generate_series(1, 10) y,
 srtm_22_03_tiled_10x10

 causes the memory to grow indefinitely finally returning an error. There
 seems to be a memory leek somewhere. I am wondering if we should not use
 PG_FREE_IF_COPY(pgraster,0) in rt_pg.c

 Also: Smaller the tiles, faster the memory grows. But I think this is only
 related to the page size. Equivalent area splitted in small tiles just
 loads faster.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/851>
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