public class PythonReduceFunction extends Object implements ReduceFunction<org.python.core.PyObject>
PythonReduceFunctionis a thin wrapper layer over a Python UDF
ReduceFunction. It receives a
ReduceFunctionas an input and keeps it internally in a serialized form. It is then delivered, as part of the job graph, up to the TaskManager, then it is opened and becomes a sort of mediator to the Python UDF
This function is used internally by the Python thin wrapper layer over the streaming data functionality
|Constructor and Description|
|Modifier and Type||Method and Description|
The core method of ReduceFunction, combining two values into one value of the same type.
public org.python.core.PyObject reduce(org.python.core.PyObject value1, org.python.core.PyObject value2) throws Exception
value1- The first value to combine.
value2- The second value to combine.
Exception- This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.
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