2017-04-01 21:54 GMT+02:00 Paul Tremblay <paulhtremb...@gmail.com>: > When I try to to do a groupByKey() in my spark environment, I get the > error described here: > > http://stackoverflow.com/questions/36798833/what-does-except > ion-randomness-of-hash-of-string-should-be-disabled-via-pythonh > > In order to attempt to fix the problem, I set up my ipython environment > with the additional line: > > PYTHONHASHSEED=1 > > When I fire up my ipython shell, and do: > > In [7]: hash("foo") > Out[7]: -2457967226571033580 > > In [8]: hash("foo") > Out[8]: -2457967226571033580 > > So my hash function is now seeded so it returns consistent values. But > when I do a groupByKey(), I get the same error: > > > Exception: Randomness of hash of string should be disabled via > PYTHONHASHSEED > > Anyone know how to fix this problem in python 3.4? >
Independent of the python version, you have to ensure that Python on spark-master and -workers is started with PYTHONHASHSEED set, e.g. by adding it to the environment of the spark processes. Best Eike
