Uploaded image for project: 'GeoServer'
  1. GeoServer
  2. GEOS-8019

Advanced Reprojection Handling may generate huge width*heigh requests at native resolution

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Medium
    • Resolution: Fixed
    • Affects Version/s: 2.10.2
    • Fix Version/s: 2.10.3, 2.11-RC1
    • Component/s: None
    • Labels:
      None

      Description

      A fake imagePyramid sample data is attached.
      It contains

      • a level 0 made of 2 corner granules R0001C0001 and R0134C0116
      • a level 1 made of 1 granule
        Data is in EPSG:3003

      A reprojecting request is sent in EPSG:900913 covering a wide bbox to be put into a 256x256 tile.

      http://localhost:8080/geoserver/wms?SERVICE=WMS&FORMAT=image%2Fpng8&TRANSPARENT=TRUE&TILED=true&LAYERS=sample:sample&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG%3A900913&BBOX=-15028131.255,-5009377.085,-10018754.17,0&WIDTH=256&HEIGHT=256

      When Advanced Projection Handling and Continuous Map Wrapping are turned off, the result is immediately produced.

      When they are turned on, the requests turns into a GridCoverage read operation which use a similar GridGeometry, asking for a huge WIDTH * HEIGHT image, using native resolution:

      GridGeometry2D[GridEnvelope2D[-10..679999653, -10..675520900], PARAM_MT["Affine",
      PARAMETER["num_row", 3],
      PARAMETER["num_col", 3],
      PARAMETER["elt_0_0", 0.20000000010750243],
      PARAMETER["elt_0_2", -113329181.65691483],
      PARAMETER["elt_1_1", -0.1999999999694039],
      PARAMETER["elt_1_2", 17880331.806959655]]]

      This will take forever when dealing with a real pyramid made of thousand of files at level 0 (and may throw OOM error when not using deferred execution)

        Attachments

          Issue links

            Activity

              People

              • Assignee:
                aaime Andrea Aime [Administrator]
                Reporter:
                dany111 Daniele Romagnoli
              • Votes:
                0 Vote for this issue
                Watchers:
                1 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: