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#
# 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 pyspark import since
from pyspark.rdd import ignore_unicode_prefix
class RuntimeConfig(object):
"""User-facing configuration API, accessible through `SparkSession.conf`.
Options set here are automatically propagated to the Hadoop configuration during I/O.
This a thin wrapper around its Scala implementation org.apache.spark.sql.RuntimeConfig.
"""
def __init__(self, jconf):
"""Create a new RuntimeConfig that wraps the underlying JVM object."""
self._jconf = jconf
@ignore_unicode_prefix
@since(2.0)
def set(self, key, value):
"""Sets the given Spark runtime configuration property.
>>> spark.conf.set("garble", "marble")
>>> spark.getConf("garble")
u'marble'
"""
self._jconf.set(key, value)
@ignore_unicode_prefix
@since(2.0)
def get(self, key):
"""Returns the value of Spark runtime configuration property for the given key,
assuming it is set.
>>> spark.setConf("bogo", "sipeo")
>>> spark.conf.get("bogo")
u'sipeo'
>>> spark.conf.get("definitely.not.set") # doctest: +IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
...
Py4JJavaError: ...
"""
return self._jconf.get(key)
@ignore_unicode_prefix
@since(2.0)
def getOption(self, key):
"""Returns the value of Spark runtime configuration property for the given key,
or None if it is not set.
>>> spark.setConf("bogo", "sipeo")
>>> spark.conf.getOption("bogo")
u'sipeo'
>>> spark.conf.getOption("definitely.not.set") is None
True
"""
iter = self._jconf.getOption(key).iterator()
if iter.hasNext():
return iter.next()
else:
return None
@ignore_unicode_prefix
@since(2.0)
def unset(self, key):
"""Resets the configuration property for the given key.
>>> spark.setConf("armado", "larmado")
>>> spark.getConf("armado")
u'larmado'
>>> spark.conf.unset("armado")
>>> spark.getConf("armado") # doctest: +IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
...
Py4JJavaError: ...
"""
self._jconf.unset(key)
def _test():
import os
import doctest
from pyspark.context import SparkContext
from pyspark.sql.session import SparkSession
import pyspark.sql.conf
os.chdir(os.environ["SPARK_HOME"])
globs = pyspark.sql.conf.__dict__.copy()
sc = SparkContext('local[4]', 'PythonTest')
globs['sc'] = sc
globs['spark'] = SparkSession(sc)
(failure_count, test_count) = doctest.testmod(pyspark.sql.conf, globs=globs)
globs['sc'].stop()
if failure_count:
exit(-1)
if __name__ == "__main__":
_test()
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