63 lines
2.3 KiB
Python
63 lines
2.3 KiB
Python
# Copyright 2016 Hewlett Packard Enterprise Development Company LP
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from pyspark import StorageLevel
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class InvalidCacheStorageLevelException(Exception):
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"""Exception thrown when an invalid cache storage level is encountered
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Attributes:
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value: string representing the error
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"""
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def __init__(self, value):
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self.value = value
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def __str__(self):
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return repr(self.value)
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class StorageUtils(object):
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"""storage util functions"""
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@staticmethod
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def get_storage_level(storage_level_str):
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"""get pyspark storage level from storage level string"""
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if (storage_level_str == "DISK_ONLY"):
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return StorageLevel.DISK_ONLY
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elif (storage_level_str == "DISK_ONLY_2"):
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return StorageLevel.DISK_ONLY_2
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elif (storage_level_str == "MEMORY_AND_DISK"):
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return StorageLevel.MEMORY_AND_DISK
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elif (storage_level_str == "MEMORY_AND_DISK_2"):
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return StorageLevel.MEMORY_AND_DISK_2
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elif (storage_level_str == "MEMORY_AND_DISK_SER"):
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return StorageLevel.MEMORY_AND_DISK_SER
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elif (storage_level_str == "MEMORY_AND_DISK_SER_2"):
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return StorageLevel.MEMORY_AND_DISK_SER_2
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elif (storage_level_str == "MEMORY_ONLY"):
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return StorageLevel.MEMORY_ONLY
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elif (storage_level_str == "MEMORY_ONLY_2"):
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return StorageLevel.MEMORY_ONLY_2
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elif (storage_level_str == "MEMORY_ONLY_SER"):
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return StorageLevel.MEMORY_ONLY_SER
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elif (storage_level_str == "MEMORY_ONLY_SER_2"):
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return StorageLevel.MEMORY_ONLY_SER_2
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elif (storage_level_str == "OFF_HEAP"):
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return StorageLevel.OFF_HEAP
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else:
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raise InvalidCacheStorageLevelException(
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"Unrecognized cache storage level: %s" % storage_level_str)
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