: org.apache.spark.SparkException: Job aborted due to stage failure: Task 1 in stage 0.0 failed 1 times, most recent failure: Lost task 1.0 in stage 0.0 (TID 1, localhost): org.apache.spark.api.python.PythonException: Traceback (most recent call last):

 "/usr/local/spark/python/lib/pyspark.zip/pyspark/worker.py", line 98, in main
command = pickleSer._read_with_length(infile)

 "/usr/local/spark/python/lib/pyspark.zip/pyspark/serializers.py", line 164, in _read_with_length
return self.loads(obj)

 "/usr/local/spark/python/lib/pyspark.zip/pyspark/serializers.py", line 422, in loads
return pickle.loads(obj)

 "/usr/local/spark/python/lib/pyspark.zip/pyspark/mllib/__init__.py", line 25, in <module>ImportError: No module named numpy
Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "./pycoin/pycoin/key/Key.py", line 214, in sign

r, s = self._generator.sign(self.secret_exponent(), val)


 "./pycoin/pycoin/ecdsa/Generator.py", line 152, in sign

return self.sign_with_recid(secret_exponent, val, gen_k)[0:2]


 "./pycoin/pycoin/ecdsa/Generator.py", line 134, in sign_with_recid

k = gen_k(n, secret_exponent, val)


 "./pycoin/pycoin/ecdsa/rfc6979.py", line 66, in deterministic_generate_k

h1 = intstream.to_bytes(val, length=order_size)


 "./pycoin/pycoin/ecdsa/intstream.py", line 7, in _to_bytes

return v.to_bytes(length, byteorder=byteorder)
OverflowError: int too big to convert
