Cannot work due to the error of json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0) about pdal-parallelizer HOT 4 OPEN

Hi @OnishiMasanori,

I see you are processing a single file but the input value in your config file points to the root of F:, put the path of the file you want to process instead.

Moreover, I advice you to create separate folders for your input, output and temp files e.g. create an input folder to store your input files, an output folder for your output files and a temp folder for your temp files.

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It would also be nice if I could see the content of your pipeline.json file

from pdal-parallelizer.

Thanks for your quick reply.

1. write the filepath for input
2. create a empty folder for temp
   succeeded to process a little bit.

However, now I'm facing another error.

File "stringsource", line 2, in pdal.libpdalpython.PyPipeline.reduce_cython
TypeError: no default reduce due to non-trivial cinit

In temp folder, "temp__-274_-309.pickle" was made, but the file size is 0 byte.

Pipeline.json is simple with only read and write.
[{
"type": "readers.las",
"filename": "C:/inputfilepath/input.las"
},
{
"type": "writers.las",
"filename": "C:/outputfilepath/output.las"
}]

Other infomation
Input file size: 2GB
Python: 3.7 (anaconda)
pdal process including readers.las can work when I apply in simple pdal process of pipeline.execute().
other parameter settings such as n_workers, threads_per_worker cannot solve the problem.

Thanks for your advice.

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@OnishiMasanori Can I see your config file ? And the command you wrote to launch pdal-parallelizer ?

Also, you don't need to specify "filename" in pdal's readers and writers. pdal-parallelizer will set these options for you.

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