[GitHub] spark pull request: [SPARK-14945][PYTHON] SparkSession Python API

[rxin <gi...@git.apache.org>]

Github user rxin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/12746#discussion_r62708450
  
    --- Diff: python/pyspark/sql/session.py ---
    @@ -0,0 +1,525 @@
    +#
    +# Licensed to the Apache Software Foundation (ASF) under one or more
    +# contributor license agreements.  See the NOTICE file distributed with
    +# this work for additional information regarding copyright ownership.
    +# The ASF licenses this file to You under the Apache License, Version 2.0
    +# (the "License"); you may not use this file except in compliance with
    +# the License.  You may obtain a copy of the License at
    +#
    +#    http://www.apache.org/licenses/LICENSE-2.0
    +#
    +# Unless required by applicable law or agreed to in writing, software
    +# distributed under the License is distributed on an "AS IS" BASIS,
    +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    +# See the License for the specific language governing permissions and
    +# limitations under the License.
    +#
    +
    +from __future__ import print_function
    +import sys
    +import warnings
    +from functools import reduce
    +
    +if sys.version >= '3':
    +    basestring = unicode = str
    +else:
    +    from itertools import imap as map
    +
    +from pyspark import since
    +from pyspark.rdd import RDD, ignore_unicode_prefix
    +from pyspark.sql.dataframe import DataFrame
    +from pyspark.sql.functions import UserDefinedFunction
    +from pyspark.sql.readwriter import DataFrameReader
    +from pyspark.sql.types import Row, DataType, StringType, StructType, _verify_type, \
    +    _infer_schema, _has_nulltype, _merge_type, _create_converter, _parse_datatype_string
    +from pyspark.sql.utils import install_exception_handler
    +
    +__all__ = ["SparkSession"]
    +
    +
    +def _monkey_patch_RDD(sparkSession):
    +    def toDF(self, schema=None, sampleRatio=None):
    --- End diff --
    
    Please do.


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