Geospatial Extension Python Error
I’ve got a series of isochrone multi-polygons that I am attempting to use the dissolve node on to create a single object. When I run the workflow with 4 out of the 5 groups (created using the same base points and methodology) it works with no issues, but on the 5th, I get this error every time:
“ERROR Dissolve 3:1222 Execute failed: ‘max_chunksize’ should be strictly positive”
When I split the group in two, the dissolve node works successfully for each side, but when I try to dissolve the rejoined group, it fails in the same way again.
Console output:
WARN Dissolve 3:1222 Traceback (most recent call last):
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.nodes5.7.0.v202509020937\src\main\pythonnodebackendlauncher.py”, line 1129, in execute
javaoutputs = self.postprocessexecuteoutputs(javaexec_context, outputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.nodes5.7.0.v202509020937\src\main\pythonnodebackendlauncher.py”, line 1264, in postprocessexecuteoutputs
self.porttyperegistry.portobjectfrompython(
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.nodes5.7.0.v202509020937\src\main\pythonnodebackendlauncher.py”, line 807, in portobjectfrom_python
return self.tablefrom_python(obj)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.nodes5.7.0.v202509020937\src\main\pythonnodebackendlauncher.py”, line 779, in tablefrom_python
obj.writeto_sink(sink)
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.arrow5.6.0.v202507151411\src\main\python\knimearrowtable.py”, line 328, in writetosink
batches = self.splittable(data)
^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.arrow5.6.0.v202507151411\src\main\python\knimearrowtable.py”, line 349, in split_table
return data.tobatches(maxchunksize=numrowsper_batch)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “pyarrow\table.pxi”, line 5096, in pyarrow.lib.Table.to_batches
ValueError: ‘max_chunksize’ should be strictly positive
ERROR Dissolve 3:1222 Execute failed: ‘max_chunksize’ should be strictly positive