[Qgis-developer] qgis-server will crash on a specific project
Andrea Peri
aperi2007 at gmail.com
Sun Jun 22 04:48:42 PDT 2014
Hi,
I tested it but don't seem work.
I'm using the master, is that ?
A.
2014-06-22 13:04 GMT+02:00 Marco Hugentobler <marco.hugentobler at sourcepole.ch>:
> It should work now. Could you test with the current git version? My test
> projects are not large enough.
>
> Regards,
> Marco
>
>
> On 22.06.2014 12:27, Andrea Peri wrote:
>>
>> you have right,
>> it is not a good solution. Too project depending and resource consuming.
>>
>> thx for a better fixing
>>
>> A.
>>
>> 2014-06-22 12:15 GMT+02:00 Marco Hugentobler
>> <marco.hugentobler at sourcepole.ch>:
>>>>
>>>> char* maxLayerEnv = getenv( "MAX_CACHE_LAYERS" )
>>>
>>>
>>> This is a short-time workaround for users.
>>>
>>> Regards,
>>> Marco
>>>
>>>
>>> On 22.06.2014 12:12, Andrea Peri wrote:
>>>>
>>>> Hi,
>>>> thx for response.
>>>>
>>>> meanwhile,
>>>> I notice that the max allowed layers is exactly 101.
>>>> This mean (knowing C/C++) an array of 100 elements.
>>>>
>>>> Searching for this particular value,
>>>> i find in the file "mapserver/qgsmslayercache.cpp"
>>>> is defined
>>>> mDefaultMaxLayers = 100;
>>>>
>>>> if not defined the environment variable "MAX_CACHE_LAYERS"
>>>>
>>>> char* maxLayerEnv = getenv( "MAX_CACHE_LAYERS" );
>>>> if ( maxLayerEnv )
>>>>
>>>>
>>>> So a possible solution could be to set this environment variable.
>>>>
>>>> I try and report.
>>>>
>>>> Regards,
>>>>
>>>> Andrea.
>>>>
>>>>
>>>> 2014-06-22 12:07 GMT+02:00 Marco Hugentobler
>>>> <marco.hugentobler at sourcepole.ch>:
>>>>>
>>>>> It is a problem with the layer cache. Will provide a fix for that soon.
>>>>>
>>>>> Regards,
>>>>> Marco
>>>>>
>>>>>
>>>>> On 22.06.2014 11:49, Andrea Peri wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I confirm.
>>>>>>
>>>>>> There is a layer limit in QGIS-Server
>>>>>>
>>>>>> I do a huge test removing one by one all the layers from my project.
>>>>>> And after the removing of every single layer I retest the working.
>>>>>>
>>>>>> Aftr a while of time. I reach the limit.
>>>>>>
>>>>>> And the project begin to run.
>>>>>>
>>>>>> I do other test to exclude that was the number of layer inside a
>>>>>> single
>>>>>> group.
>>>>>> All the test give the response that seem to be the max number of
>>>>>> layers in a project.
>>>>>>
>>>>>> So the question is:
>>>>>>
>>>>>> QGIS desktop allow to put more layers rather than how many are
>>>>>> accepted from qgis-server.
>>>>>>
>>>>>> This not good for a WYSIWYG system.
>>>>>>
>>>>>> Ok, I will try to patch my server when found exactly where is the
>>>>>> problem.
>>>>>>
>>>>>> Meanwhile,
>>>>>> Now the question is on what structure is this limit ?
>>>>>>
>>>>>> I don't guess it is simply a layer limit but perhaps a more specific
>>>>>> structure.
>>>>>>
>>>>>> Now I have a project that crash , and a project with a one less layer
>>>>>> that
>>>>>> work.
>>>>>>
>>>>>>
>>>>>> Doing a DIFF beetween the two projects I see the possible structure
>>>>>> breakable are:
>>>>>>
>>>>>> layer-tree-canvas -> custom-order -> item
>>>>>> maplayer
>>>>>> Digitizing -> LayerSnappingList -> value (type QStringList)
>>>>>> Digitizing -> LayerSnappingEnabledList -> value (type QStringList)
>>>>>> Digitizing -> LayerSnapToList -> value (type QStringList)
>>>>>> Digitizing -> LayerSnappingToleranceList -> value (type QStringList)
>>>>>>
>>>>>> I check if in the code there is a limited array dimension for this
>>>>>> objects.
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>> Andrea.
>>>>>>
>>>>>>
>>>>>> 2014-06-22 7:29 GMT+02:00 Andrea Peri <aperi2007 at gmail.com>:
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> I do some other tests.
>>>>>>>
>>>>>>> I take my project that give QG crash and split it in two compementary
>>>>>>> projects.
>>>>>>> Of course I do this using qgis desktop to avoid unvolontary errors.
>>>>>>>
>>>>>>> Testing both of them on QS there is no crash !
>>>>>>>
>>>>>>> So:
>>>>>>> The first plausible theory I can give is that Qgis-Server has a LIMIT
>>>>>>> to the number of Groups or Layers it can have in a project.
>>>>>>> A limit different (and less) than qgis desktop (osgeo4w version).
>>>>>>>
>>>>>>> Is this a plausible theory ?
>>>>>>>
>>>>>>> Thx,
>>>>>>>
>>>>>>> Andrea.
>>>>>>>
>>>>>>>
>>>>>>> 2014-06-21 22:04 GMT+02:00 Andrea Peri <aperi2007 at gmail.com>:
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>> I have a qgis-server that will crash on a specific project.
>>>>>>>>
>>>>>>>> The qgis-server will run correctly with another project that seem
>>>>>>>> almost similar (both use the SVG symbols).
>>>>>>>>
>>>>>>>> The project that crash my QG run correctly and smootly on a qgis
>>>>>>>> desktop (qgis-dev) on a windows system.
>>>>>>>> The project use SVG symbols, but also the other project I test on
>>>>>>>> QSused SVG symbol
>>>>>>>> so I suppose the SVG engine is ok.
>>>>>>>> Also I check t have set correctly the SVG paths.
>>>>>>>> Also I update to the very last (about 4 hours ago) master version.
>>>>>>>>
>>>>>>>> After all this check the qgis-server still crash.
>>>>>>>>
>>>>>>>> So I try to set the logfile, but the log is always empty.
>>>>>>>> This mean that the cgi qgis-server will crash almost immediatly.
>>>>>>>>
>>>>>>>> So I set an environment shell to run it manually and to test the cgi
>>>>>>>> with a gdb session.
>>>>>>>>
>>>>>>>> The results are this:
>>>>>>>>
>>>>>>>> ..................
>>>>>>>> [Thread debugging using libthread_db enabled]
>>>>>>>> Using host libthread_db library
>>>>>>>> "/lib/x86_64-linux-gnu/libthread_db.so.1".
>>>>>>>> Warning 1: Unable to find driver ECW to unload from GDAL_SKIP
>>>>>>>> environment variable.
>>>>>>>> Warning 1: Unable to find driver ECW to unload from GDAL_SKIP
>>>>>>>> environment variable.
>>>>>>>> Warning 1: Unable to find driver JP2ECW to unload from GDAL_SKIP
>>>>>>>> environment variable.
>>>>>>>> Warning 1: Unable to find driver ECW to unload from GDAL_SKIP
>>>>>>>> environment variable.
>>>>>>>> Warning 1: Unable to find driver JP2ECW to unload from GDAL_SKIP
>>>>>>>> environment variable.
>>>>>>>> [New Thread 0x7fffe307c700 (LWP 1844)]
>>>>>>>> [New Thread 0x7fffe27ea700 (LWP 1845)]
>>>>>>>>
>>>>>>>> Program received signal SIGSEGV, Segmentation fault.
>>>>>>>> 0x00007ffff4fc06da in qHash(QString const&) ()
>>>>>>>> from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
>>>>>>>> (gdb)
>>>>>>>> ............................
>>>>>>>>
>>>>>>>> The version of libQtCore.so.4 I run on the linux is 4.8.2.
>>>>>>>>
>>>>>>>> Perhaps the 4.8.2 is too old for qgis-server ?
>>>>>>>> :/
>>>>>>>> But another project will run without any apparent problem.
>>>>>>>> ?
>>>>>>>>
>>>>>>>> Many thx for every hint.
>>>>>>>>
>>>>>>>> --
>>>>>>>> -----------------
>>>>>>>> Andrea Peri
>>>>>>>> . . . . . . . . .
>>>>>>>> qwerty àèìòù
>>>>>>>> -----------------
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> -----------------
>>>>>>> Andrea Peri
>>>>>>> . . . . . . . . .
>>>>>>> qwerty àèìòù
>>>>>>> -----------------
>>>>>>
>>>>>>
>>>>>>
>>>>> --
>>>>> Dr. Marco Hugentobler
>>>>> Sourcepole - Linux & Open Source Solutions
>>>>> Weberstrasse 5, CH-8004 Zürich, Switzerland
>>>>> marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
>>>>> Technical Advisor QGIS Project Steering Committee
>>>>>
>>>>> _______________________________________________
>>>>> Qgis-developer mailing list
>>>>> Qgis-developer at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>>>>
>>>>
>>>>
>>>
>>> --
>>> Dr. Marco Hugentobler
>>> Sourcepole - Linux & Open Source Solutions
>>> Weberstrasse 5, CH-8004 Zürich, Switzerland
>>> marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
>>> Technical Advisor QGIS Project Steering Committee
>>>
>>> _______________________________________________
>>> Qgis-developer mailing list
>>> Qgis-developer at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>>
>>
>>
>
>
> --
> Dr. Marco Hugentobler
> Sourcepole - Linux & Open Source Solutions
> Weberstrasse 5, CH-8004 Zürich, Switzerland
> marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
> Technical Advisor QGIS Project Steering Committee
>
> _______________________________________________
> Qgis-developer mailing list
> Qgis-developer at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-developer
--
-----------------
Andrea Peri
. . . . . . . . .
qwerty àèìòù
-----------------
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