diff options
| -rw-r--r-- | python/pyspark/accumulators.py | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/python/pyspark/accumulators.py b/python/pyspark/accumulators.py index d367f91967..da3d96689a 100644 --- a/python/pyspark/accumulators.py +++ b/python/pyspark/accumulators.py @@ -42,6 +42,13 @@ >>> a.value 13 +>>> b = sc.accumulator(0) +>>> def g(x): +... b.add(x) +>>> rdd.foreach(g) +>>> b.value +6 + >>> from pyspark.accumulators import AccumulatorParam >>> class VectorAccumulatorParam(AccumulatorParam): ... def zero(self, value): @@ -139,9 +146,13 @@ class Accumulator(object): raise Exception("Accumulator.value cannot be accessed inside tasks") self._value = value + def add(self, term): + """Adds a term to this accumulator's value""" + self._value = self.accum_param.addInPlace(self._value, term) + def __iadd__(self, term): """The += operator; adds a term to this accumulator's value""" - self._value = self.accum_param.addInPlace(self._value, term) + self.add(term) return self def __str__(self): |