[gdal-dev] OpenFileGDB 10 MB field description limitation

[Matthias Uden]

Hi list,

I'm running GDAL 1.11.1 on an Ubuntu 14.04.1 64-bit system.

ogr2ogr fails while trying to convert a Feature Class from a rather huge 
FileGDB to a PostGIS table. Unfortunately, I have currently no means to 
access the original GDB file directly.
It gives this error:

ERROR 1: Error occured in filegdbtable.cpp at line 659

Which breaks down to this line of code:

returnErrorIf 
<http://fossies.org/dox/gdal-1.11.1/filegdbtable__priv_8h.html#a2386c8f3b2701f62e44b603c048cab4b>(nFieldDescLength 
 > 10 * 1024 * 1024 || nFieldDescLength < 10 );


By putting in a debug output I figured that the "nFieldDescLength" of my 
feature class is /way/ larger than the maximum allowed value of 10 MB.
In fact it's something around 1.6 GiB.... :-o   (what kind of field 
description is *this*...?)

Does anyone of you have an idea on what exactly the "nFieldDescLength" 
is and - more importantly - why it's limited to 10MB and if further 
increasing this value would do any harm to the overall process? Is a 
field description of 1.6 gigs even realistic at all or is it more likely 
that I have a corrupt input file in some way? Can't I opt to just skip 
the lousy field description import and still import what I'm interested 
in - the /data/ itself?

Apparently there was already a bug ticket for this problem, which led to 
increasing the max. value from 1 to 10 MB [1]
It seems to me this might also be related to the "big file support 
problem" [2] which I thought was resolved in version 1.11.1 [3].

Any help or workaround suggestions are appreciated!
Otherwise I'll have to try if the proprietary ESRI driver can handle 
this... (not tested yet).

Many thanks and best regards,
Matthias

--

[1] - https://trac.osgeo.org/gdal/ticket/5660
[2] - https://trac.osgeo.org/gdal/ticket/5615
[3] - https://trac.osgeo.org/gdal/wiki/Release/1.11.1-News
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