# Copyright (C) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See LICENSE in project root for information.
import sys
if sys.version >= '3':
basestring = str
from pyspark.ml.param.shared import *
from pyspark import keyword_only
from pyspark.ml.util import JavaMLReadable, JavaMLWritable
from mmlspark.core.serialize.java_params_patch import *
from pyspark.ml.wrapper import JavaTransformer, JavaEstimator, JavaModel
from pyspark.ml.common import inherit_doc
from mmlspark.core.schema.Utils import *
[docs]@inherit_doc
class Repartition(ComplexParamsMixin, JavaMLReadable, JavaMLWritable, JavaTransformer):
"""
Args:
disable (bool): Whether to disable repartitioning (so that one can turn it off for evaluation) (default: false)
n (int): Number of partitions
"""
@keyword_only
def __init__(self, disable=False, n=None):
super(Repartition, self).__init__()
self._java_obj = self._new_java_obj("com.microsoft.ml.spark.stages.Repartition")
self.disable = Param(self, "disable", "disable: Whether to disable repartitioning (so that one can turn it off for evaluation) (default: false)")
self._setDefault(disable=False)
self.n = Param(self, "n", "n: Number of partitions")
if hasattr(self, "_input_kwargs"):
kwargs = self._input_kwargs
else:
kwargs = self.__init__._input_kwargs
self.setParams(**kwargs)
[docs] @keyword_only
def setParams(self, disable=False, n=None):
"""
Set the (keyword only) parameters
Args:
disable (bool): Whether to disable repartitioning (so that one can turn it off for evaluation) (default: false)
n (int): Number of partitions
"""
if hasattr(self, "_input_kwargs"):
kwargs = self._input_kwargs
else:
kwargs = self.__init__._input_kwargs
return self._set(**kwargs)
[docs] def setDisable(self, value):
"""
Args:
disable (bool): Whether to disable repartitioning (so that one can turn it off for evaluation) (default: false)
"""
self._set(disable=value)
return self
[docs] def getDisable(self):
"""
Returns:
bool: Whether to disable repartitioning (so that one can turn it off for evaluation) (default: false)
"""
return self.getOrDefault(self.disable)
[docs] def setN(self, value):
"""
Args:
n (int): Number of partitions
"""
self._set(n=value)
return self
[docs] def getN(self):
"""
Returns:
int: Number of partitions
"""
return self.getOrDefault(self.n)
[docs] @classmethod
def read(cls):
""" Returns an MLReader instance for this class. """
return JavaMMLReader(cls)
[docs] @staticmethod
def getJavaPackage():
""" Returns package name String. """
return "com.microsoft.ml.spark.stages.Repartition"
@staticmethod
def _from_java(java_stage):
module_name=Repartition.__module__
module_name=module_name.rsplit(".", 1)[0] + ".Repartition"
return from_java(java_stage, module_name)