[gdal-dev] Read error on large VRT files

Armin Burger armin.burger at gmx.net
Thu Dec 22 02:20:42 PST 2016


I meant the GDAL_MAX_DATASET_POOL_SIZE option. Don't know if it really 
has any influence, but these read errors happened multiple times in the 
past when trying to translate VRT's with lots of input files, for tiles 
that were actually readable. It could be of course also a problem of the 
network file system, short network time-outs etc.

Armin

On 21/12/16 10:49, Even Rouault wrote:
> On mercredi 21 d├ęcembre 2016 10:29:27 CET Armin Burger wrote:
>
>> Margherita
>
>>
>
>> thanks, now that you say this, I remeber a special GDAL option
>
>> "GDAL_MAX_DATASET_POOL_SIZE" which by default is 100. The operating system
>
>> limit itself is high enough on our server (65k). When running the
>
>> processing again with less memory cache (and hence likely less concurrent
>
>> opened files) it worked without errors. I will set this GDAL option
> and see
>
>> if I ever run into this errors again.
>
>
>
> On which option did you play exactly ?
>
>
>
> The TIFF error you get is a rather low level one (really trying to read
> a range of bytes from a file), and I can't explain why GDAL options
> would play a role on it.
>
>
>
> Even
>
>
>
> --
>
> Spatialys - Geospatial professional services
>
> http://www.spatialys.com
>


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