5d16d5bbfd
This pull request aims to resolve all outstanding PEP8 violations in PySpark. Author: Nicholas Chammas <nicholas.chammas@gmail.com> Author: nchammas <nicholas.chammas@gmail.com> Closes #1505 from nchammas/master and squashes the following commits: 98171af [Nicholas Chammas] [SPARK-2470] revert PEP 8 fixes to cloudpickle cba7768 [Nicholas Chammas] [SPARK-2470] wrap expression list in parentheses e178dbe [Nicholas Chammas] [SPARK-2470] style - change position of line break 9127d2b [Nicholas Chammas] [SPARK-2470] wrap expression lists in parentheses 22132a4 [Nicholas Chammas] [SPARK-2470] wrap conditionals in parentheses 24639bc [Nicholas Chammas] [SPARK-2470] fix whitespace for doctest 7d557b7 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to tests.py 8f8e4c0 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to storagelevel.py b3b96cf [Nicholas Chammas] [SPARK-2470] PEP8 fixes to statcounter.py d644477 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to worker.py aa3a7b6 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to sql.py 1916859 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to shell.py 95d1d95 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to serializers.py a0fec2e [Nicholas Chammas] [SPARK-2470] PEP8 fixes to mllib c85e1e5 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to join.py d14f2f1 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to __init__.py 81fcb20 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to resultiterable.py 1bde265 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to java_gateway.py 7fc849c [Nicholas Chammas] [SPARK-2470] PEP8 fixes to daemon.py ca2d28b [Nicholas Chammas] [SPARK-2470] PEP8 fixes to context.py f4e0039 [Nicholas Chammas] [SPARK-2470] PEP8 fixes to conf.py a6d5e4b [Nicholas Chammas] [SPARK-2470] PEP8 fixes to cloudpickle.py f0a7ebf [Nicholas Chammas] [SPARK-2470] PEP8 fixes to rddsampler.py 4dd148f [nchammas] Merge pull request #5 from apache/master f7e4581 [Nicholas Chammas] unrelated pep8 fix a36eed0 [Nicholas Chammas] name ec2 instances and security groups consistently de7292a [nchammas] Merge pull request #4 from apache/master 2e4fe00 [nchammas] Merge pull request #3 from apache/master 89fde08 [nchammas] Merge pull request #2 from apache/master 69f6e22 [Nicholas Chammas] PEP8 fixes 2627247 [Nicholas Chammas] broke up lines before they hit 100 chars 6544b7e [Nicholas Chammas] [SPARK-2065] give launched instances names 69da6cf [nchammas] Merge pull request #1 from apache/master
60 lines
2.7 KiB
Python
60 lines
2.7 KiB
Python
#
|
|
# 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.
|
|
#
|
|
|
|
__all__ = ["StorageLevel"]
|
|
|
|
|
|
class StorageLevel:
|
|
"""
|
|
Flags for controlling the storage of an RDD. Each StorageLevel records whether to use memory,
|
|
whether to drop the RDD to disk if it falls out of memory, whether to keep the data in memory
|
|
in a serialized format, and whether to replicate the RDD partitions on multiple nodes.
|
|
Also contains static constants for some commonly used storage levels, such as MEMORY_ONLY.
|
|
"""
|
|
|
|
def __init__(self, useDisk, useMemory, useOffHeap, deserialized, replication=1):
|
|
self.useDisk = useDisk
|
|
self.useMemory = useMemory
|
|
self.useOffHeap = useOffHeap
|
|
self.deserialized = deserialized
|
|
self.replication = replication
|
|
|
|
def __repr__(self):
|
|
return "StorageLevel(%s, %s, %s, %s, %s)" % (
|
|
self.useDisk, self.useMemory, self.useOffHeap, self.deserialized, self.replication)
|
|
|
|
def __str__(self):
|
|
result = ""
|
|
result += "Disk " if self.useDisk else ""
|
|
result += "Memory " if self.useMemory else ""
|
|
result += "Tachyon " if self.useOffHeap else ""
|
|
result += "Deserialized " if self.deserialized else "Serialized "
|
|
result += "%sx Replicated" % self.replication
|
|
return result
|
|
|
|
StorageLevel.DISK_ONLY = StorageLevel(True, False, False, False)
|
|
StorageLevel.DISK_ONLY_2 = StorageLevel(True, False, False, False, 2)
|
|
StorageLevel.MEMORY_ONLY = StorageLevel(False, True, False, True)
|
|
StorageLevel.MEMORY_ONLY_2 = StorageLevel(False, True, False, True, 2)
|
|
StorageLevel.MEMORY_ONLY_SER = StorageLevel(False, True, False, False)
|
|
StorageLevel.MEMORY_ONLY_SER_2 = StorageLevel(False, True, False, False, 2)
|
|
StorageLevel.MEMORY_AND_DISK = StorageLevel(True, True, False, True)
|
|
StorageLevel.MEMORY_AND_DISK_2 = StorageLevel(True, True, False, True, 2)
|
|
StorageLevel.MEMORY_AND_DISK_SER = StorageLevel(True, True, False, False)
|
|
StorageLevel.MEMORY_AND_DISK_SER_2 = StorageLevel(True, True, False, False, 2)
|
|
StorageLevel.OFF_HEAP = StorageLevel(False, False, True, False, 1)
|