integration-tests/tests/worker_memory_check.py

0001 #
0002 # Licensed to the Apache Software Foundation (ASF) under one or more
0003 # contributor license agreements.  See the NOTICE file distributed with
0004 # this work for additional information regarding copyright ownership.
0005 # The ASF licenses this file to You under the Apache License, Version 2.0
0006 # (the "License"); you may not use this file except in compliance with
0007 # the License.  You may obtain a copy of the License at
0008 #
0009 #    http://www.apache.org/licenses/LICENSE-2.0
0010 #
0011 # Unless required by applicable law or agreed to in writing, software
0012 # distributed under the License is distributed on an "AS IS" BASIS,
0013 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014 # See the License for the specific language governing permissions and
0015 # limitations under the License.
0016 #
0017
0018 from __future__ import print_function
0019
0020 import resource
0021 import sys
0022
0023 from pyspark.sql import SparkSession
0024
0025
0026 if __name__ == "__main__":
0027     """
0028         Usage: worker_memory_check [Memory_in_Mi]
0029     """
0030     spark = SparkSession \
0031         .builder \
0032         .appName("PyMemoryTest") \
0033         .getOrCreate()
0034     sc = spark.sparkContext
0035     if len(sys.argv) < 2:
0036         print("Usage: worker_memory_check [Memory_in_Mi]", file=sys.stderr)
0037         sys.exit(-1)
0038
0039     def f(x):
0040         rLimit = resource.getrlimit(resource.RLIMIT_AS)
0041         print("RLimit is " + str(rLimit))
0042         return rLimit
0043     resourceValue = sc.parallelize([1]).map(f).collect()[0][0]
0044     print("Resource Value is " + str(resourceValue))
0045     truthCheck = (resourceValue == int(sys.argv[1]))
0046     print("PySpark Worker Memory Check is: " + str(truthCheck))
0047     spark.stop()