[gdal-dev] QGIS hanging when opening a FileGDB on 64 bit Linux

Tue Aug 13 12:10:40 PDT 2013

Hi Even.

I found the problem. I needed to do a make clean before rebuilding gdal. Now everything is working and QGIS can load FIleGDBs!

Any chance to get this change back-ported to 1.10 so QGIS 2.0 will work with FIleGDBs?

Thanks again for your help.

Cheers
Jeremy
________________________________________
From: Jeremy Palmer
Sent: Tuesday, 13 August 2013 9:50 p.m.
To: Even Rouault
Cc: 'gdal-dev at lists.osgeo.org'; 'qgis-developer at lists.osgeo.org'
Subject: RE: [gdal-dev] QGIS hanging when opening a FileGDB on 64 bit Linux

Nope I get a crash when opening now via OGRSFDriverRegistrar::Open.

back trace is here: https://gist.github.com/palmerj/6219582

called from here in QGIS: https://github.com/qgis/Quantum-GIS/blob/master/src/providers/ogr/qgsogrprovider.cpp#L305

________________________________________
From: Even Rouault [even.rouault at mines-paris.org]
Sent: Tuesday, 13 August 2013 7:23 p.m.
To: Jeremy Palmer
Cc: 'Even Rouault'; 'gdal-dev at lists.osgeo.org'; 'qgis-developer at lists.osgeo.org'
Subject: RE: [gdal-dev] QGIS hanging when opening a FileGDB on 64 bit Linux

Selon Jeremy Palmer <JPalmer at linz.govt.nz>:

> Wow Even - just amazing as always.
>
> Have you confirmed that you can no open a FileGDB in QGIS?

No, I didn't. I've tested with the OGR API that it solved the issue with the
following access pattern :

ds1 = ogr.Open(datasetname)
ds2 = ogr.Open(datasetname)
ds2 = None
ds1 = None

> I still get the
> freeze when using GDAL trunk, but maybe that now a QGIS problem.

Just to be sure that you are using the version with the fix, if you break with
gdb when it hangs, does it display FGdbDriver::Release() in the stack trace ?

>
> -----Original Message-----
> From: Even Rouault [mailto:even.rouault at mines-paris.org]
> Sent: Tuesday, 13 August 2013 11:29 a.m.
> To: gdal-dev at lists.osgeo.org
> Cc: Jeremy Palmer; 'qgis-developer at lists.osgeo.org'
> Subject: Re: [gdal-dev] QGIS hanging when opening a FileGDB on 64 bit Linux
>
> Le lundi 12 août 2013 22:12:11, Jeremy Palmer a écrit :
> > Further to this I see that when you open a FIleGDB in QGIS 3 OGROpen
> > calls made to the same database before any OGR_DS_Destroy calls are
> > made. These open calls occur during the layer selection dialog, the
> > OGR provider construction, and the initialisation of the
> QgsOgrFeatureIterator.
> >
> > I'm guessing the fix for this should really be done at the Esri
> > library level, but because we have no control over this maybe
> > something can be done in the OGR library to reuse FileGDBAPI Geodatabase
> handles?
>
> Jeremy,
>
> I do think this is exactly the issue of
> http://forums.arcgis.com/threads/76527-CloseDatabase-hanging-on-64-bit-Lin
> ux- when-same-File-Geodatabase-opened-twice
>
> At least I reproduced it on my own PC. I've implemented a workaround in GDAL
> trunk for that issue that implements ref-counting of the FileGDBAPI Geodabase
> handle at OGR side : http://trac.osgeo.org/gdal/changeset/26307.
>
> Even
>
> >
> > Cheers,
> > Jeremy
> >
> > -----Original Message-----
> > From: Jeremy Palmer
> > Sent: Sunday, 11 August 2013 9:08 a.m.
> > To: qgis-developer at lists.osgeo.org
> > Subject: QGIS hanging when opening a FileGDB on 64 bit Linux
> >
> > Hi QGIS devs!
> >
> > Since the latest round of code changes (maybe over the last 2 months)
> > I can no longer open Esri FileGDB in QGIS. I can read the database and
> > QGIS prompts me from the FileGDB layers to add to the map, but when I
> > select the layer from this dialog QGIS just hangs. I did some
> > debugging and it seems to hang on the OGR_DS_Destroy call within
> > QgsOgrFeatureIterator::close(). Does anyone else have this problem?
> >
> > I'm running FileGDB SDK 1.3 and Ubuntu 12.04 64bit with QGIS master.
> > I've tested this with the OSGeo4W win32 qgis-dev package and I don't
> > get the problem.
> >
> > Could this be related to this issue:
> > http://forums.arcgis.com/threads/76527-CloseDatabase-hanging-on-64-bit
> > -Lin ux-when-same-File-Geodatabase-opened-twice
> >
> > ??
> >
> > Cheers,
> > Jeremy
> >
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This message contains information, which is confidential and may be subject to legal privilege. If you are not the intended recipient, you must not peruse, use, disseminate, distribute or copy this message. If you have received this message in error, please notify us immediately (Phone 0800 665 463 or info at linz.govt.nz) and destroy the original message. LINZ accepts no responsibility for changes to this email, or for any attachments, after its transmission from LINZ. Thank You.