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.nodes_5.7.0.v202509020937\src\main\python_node_backend_launcher.py”, line 1129, in execute
java_outputs = self.postprocess_execute_outputs(java_exec_context, outputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.nodes_5.7.0.v202509020937\src\main\python_node_backend_launcher.py”, line 1264, in postprocess_execute_outputs
self._port_type_registry.port_object_from_python(
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.nodes_5.7.0.v202509020937\src\main\python_node_backend_launcher.py”, line 807, in port_object_from_python
return self._table_from_python(obj)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.nodes_5.7.0.v202509020937\src\main\python_node_backend_launcher.py”, line 779, in _table_from_python
obj._write_to_sink(sink)
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.arrow_5.6.0.v202507151411\src\main\python\knime_arrow_table.py”, line 328, in _write_to_sink
batches = self._split_table(data)
^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Program Files\KNIME 5.7\plugins\org.knime.python3.arrow_5.6.0.v202507151411\src\main\python\knime_arrow_table.py”, line 349, in _split_table
return data.to_batches(max_chunksize=num_rows_per_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