| # |
| # 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. |
| # |
| import os |
| import sys |
| import time |
| import unittest |
| |
| from pyspark.serializers import read_int |
| |
| |
| class DaemonTests(unittest.TestCase): |
| def connect(self, port): |
| from socket import socket, AF_INET, AF_INET6, SOCK_STREAM |
| |
| family, host = AF_INET, "127.0.0.1" |
| if os.environ.get("SPARK_PREFER_IPV6", "false").lower() == "true": |
| family, host = AF_INET6, "::1" |
| sock = socket(family, SOCK_STREAM) |
| sock.connect((host, port)) |
| # send a split index of -1 to shutdown the worker |
| sock.send(b"\xFF\xFF\xFF\xFF") |
| sock.close() |
| return True |
| |
| def do_termination_test(self, terminator): |
| from subprocess import Popen, PIPE |
| from errno import ECONNREFUSED |
| |
| # start daemon |
| daemon_path = os.path.join(os.path.dirname(__file__), "..", "daemon.py") |
| python_exec = sys.executable or os.environ.get("PYSPARK_PYTHON") |
| daemon = Popen([python_exec, daemon_path], stdin=PIPE, stdout=PIPE) |
| |
| # read the port number |
| port = read_int(daemon.stdout) |
| |
| # daemon should accept connections |
| self.assertTrue(self.connect(port)) |
| |
| # wait worker process spawned from daemon exit. |
| time.sleep(1) |
| |
| # request shutdown |
| terminator(daemon) |
| time.sleep(1) |
| |
| # daemon should no longer accept connections |
| try: |
| self.connect(port) |
| except EnvironmentError as exception: |
| self.assertEqual(exception.errno, ECONNREFUSED) |
| else: |
| self.fail("Expected EnvironmentError to be raised") |
| |
| def test_termination_stdin(self): |
| """Ensure that daemon and workers terminate when stdin is closed.""" |
| self.do_termination_test(lambda daemon: daemon.stdin.close()) |
| |
| def test_termination_sigterm(self): |
| """Ensure that daemon and workers terminate on SIGTERM.""" |
| from signal import SIGTERM |
| |
| self.do_termination_test(lambda daemon: os.kill(daemon.pid, SIGTERM)) |
| |
| |
| if __name__ == "__main__": |
| from pyspark.tests.test_daemon import * # noqa: F401 |
| |
| try: |
| import xmlrunner |
| |
| testRunner = xmlrunner.XMLTestRunner(output="target/test-reports", verbosity=2) |
| except ImportError: |
| testRunner = None |
| unittest.main(testRunner=testRunner, verbosity=2) |