[mapserver-users] Very strange problem doing a query and hanging on MS 6.4.1
thomas bonfort
thomas.bonfort at gmail.com
Mon Jul 13 01:12:47 PDT 2015
Steve,
please include a backtrace from gdb where you believe the infinite
loop is happening.
--
thomas
On 13 July 2015 at 01:22, Stephen Woodbridge <woodbri at swoodbridge.com> wrote:
> I added gdalinfo on an actual raster file below. It turns out the -99999 is
> the NoData Value. I would be happy to just get this value back (once), but I
> think something is broken and putting mapserver into an infinite loop.
>
> -Steve W
>
>
> On 7/12/2015 7:14 PM, Stephen Woodbridge wrote:
>>
>> Hi all,
>>
>> I have run into a very strange problem doing a mapserver query. I'm
>> upgrading a system that was running fine. The details are below. I also
>> tried to put the template inside a CLASS ... END block that didn't help.
>>
>> Can anyone else reproduce something like this?
>> Got any ideas on how to work around it?
>>
>> Thanks,
>> -Steve W
>>
>> Old system:
>> Ubuntu 12.04 LTS
>>
>> MapServer version 6.2.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG SUPPORTS=PROJ
>> SUPPORTS=GD SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO
>> SUPPORTS=SVG_SYMBOLS SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER
>> SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT
>> SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI
>> SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR
>> INPUT=GDAL INPUT=SHAPEFILE
>>
>> New system:
>> Ubuntu 14.04 LTS
>>
>> MapServer version 6.4.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=KML
>> SUPPORTS=PROJ SUPPORTS=GD SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO
>> SUPPORTS=SVG_SYMBOLS SUPPORTS=RSVG SUPPORTS=ICONV SUPPORTS=FRIBIDI
>> SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER
>> SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER
>> SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS
>> INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>>
>> The query layer looks like this:
>>
>> LAYER
>> NAME "model_query"
>> STATUS on
>> TYPE raster
>>
>> TILEINDEX "NOAA_Coastal_Relief_Model/index.shp"
>> TILEITEM "LOCATION"
>> TEMPLATE "/maps/wms/pixel.value.html"
>> END
>>
>>
>> cat "/maps/wms/pixel.value.html"
>> <!-- MapServer Template -->
>> [value_0]
>>
>>
>> dbf_dump -info wms/data/Bathy/NOAA_Coastal_Relief_Model/index.dbf
>> Filename: wms/data/Bathy/NOAA_Coastal_Relief_Model/index.dbf
>> Version: 0x03 (ver. 3)
>> Num of records: 61
>> Header length: 65
>> Record length: 256
>> Last change: 1995/7/26
>> Num fields: 1
>> Field info:
>> Num Name Type Len Decimal
>> 1. LOCATION C 255 0
>>
>>
>> dbf_dump wms/data/Bathy/NOAA_Coastal_Relief_Model/index.dbf | head
>> NOAA_Coastal_Relief_Model/BSM-1035.tif
>> NOAA_Coastal_Relief_Model/BSM-1156.tif
>> NOAA_Coastal_Relief_Model/BSM-1193.tif
>> NOAA_Coastal_Relief_Model/BSM-1239.tif
>> NOAA_Coastal_Relief_Model/BSM-1261.tif
>> NOAA_Coastal_Relief_Model/BSM-1326.tif
>> NOAA_Coastal_Relief_Model/BSM-1343.tif
>> NOAA_Coastal_Relief_Model/BSM-1536.tif
>> NOAA_Coastal_Relief_Model/BSM-1557.tif
>> NOAA_Coastal_Relief_Model/BSM-1801.tif
>>
>> ogrinfo -so wms/data/Bathy/NOAA_Coastal_Relief_Model/index.shp index
>> INFO: Open of `wms/data/Bathy/NOAA_Coastal_Relief_Model/index.shp'
>> using driver `ESRI Shapefile' successful.
>>
>> Layer name: index
>> Geometry: Polygon
>> Feature Count: 61
>> Extent: (-130.000417, 16.999583) - (-65.999599, 49.000401)
>> Layer SRS WKT:
>> (unknown)
>> location: String (255.0)
>>
>>
>> When I issue a query like:
>>
>> /usr/lib/cgi-bin/mapserv
>>
>> QUERY_STRING='map=/maps/wms/bathymetry.map&mode=query&layers=model_query&mapxy=-100.98125+41.58125'
>>
>>
>> The old server responded with:
>> Content-Type: text/html
>>
>> <HTML>
>> <HEAD><TITLE>MapServer Message</TITLE></HEAD>
>> <!-- MapServer version 6.2.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG
>> SUPPORTS=PROJ SUPPORTS=GD SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO
>> SUPPORTS=SVG_SYMBOLS SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER
>> SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT
>> SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI
>> SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR
>> INPUT=GDAL INPUT=SHAPEFILE -->
>> <BODY BGCOLOR="#FFFFFF">
>> msQueryByPoint(): Search returned no results. No matching record(s) found.
>> </BODY></HTML>You have new mail in /var/mail/root
>>
>>
>> I get an infinite number of lines like the following on the new server:
>>
>> # /usr/lib/cgi-bin/mapserv
>>
>> QUERY_STRING='map=/maps/wms/bathymetry.map&mode=query&layers=model_query&mapxy=-100.98125+41.58125'
>> | head
>> Content-Type: text/html
>>
>> -99999
>> -99999
>> -99999
>> -99999
>> -99999
>> -99999
>> -99999
>> -99999
>> ^C
>
>
> # gdalinfo wms/data/Bathy/NOAA_Coastal_Relief_Model/BSM-1156.tif
> Driver: GTiff/GeoTIFF
> Files: wms/data/Bathy/NOAA_Coastal_Relief_Model/BSM-1156.tif
> Size is 4801, 4801
> Coordinate System is:
> GEOGCS["WGS 84",
> DATUM["WGS_1984",
> SPHEROID["WGS 84",6378137,298.257223563,
> AUTHORITY["EPSG","7030"]],
> AUTHORITY["EPSG","6326"]],
> PRIMEM["Greenwich",0],
> UNIT["degree",0.0174532925199433],
> AUTHORITY["EPSG","4326"]]
> Origin = (-102.000833330000006,41.000817329999997)
> Pixel Size = (0.000833330000000,-0.000833330000000)
> Metadata:
> AREA_OR_POINT=Point
> Image Structure Metadata:
> INTERLEAVE=BAND
> Corner Coordinates:
> Upper Left (-102.0008333, 41.0008173) (102d 0' 3.00"W, 41d 0' 2.94"N)
> Lower Left (-102.0008333, 37.0000000) (102d 0' 3.00"W, 37d 0' 0.00"N)
> Upper Right ( -98.0000160, 41.0008173) ( 98d 0' 0.06"W, 41d 0' 2.94"N)
> Lower Right ( -98.0000160, 37.0000000) ( 98d 0' 0.06"W, 37d 0' 0.00"N)
> Center (-100.0004247, 39.0004087) (100d 0' 1.53"W, 39d 0' 1.47"N)
> Band 1 Block=256x256 Type=Float32, ColorInterp=Gray
> NoData Value=-99999
> Overviews: 2401x2401, 1201x1201, 601x601, 301x301, 151x151, 76x76, 38x38
>
>
>
>>
>> You have to ^C to kill it, even when using head. This seems like a
>> serious bug as it runs for about 10 mins taking 100% CPU. If you call it
>> via file_get_contents() in php is hangs the request and freezea my OL
>> app until it is killed or kills php reading all the data.
>> _______________________________________________
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>
>
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