| # |
| # 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 time |
| import threading |
| import queue as Queue |
| |
| from pyspark import SparkConf, SparkContext |
| |
| |
| def delayed(seconds): |
| def f(x): |
| time.sleep(seconds) |
| return x |
| return f |
| |
| |
| def call_in_background(f, *args): |
| result = Queue.Queue(1) |
| t = threading.Thread(target=lambda: result.put(f(*args))) |
| t.daemon = True |
| t.start() |
| return result |
| |
| |
| def main(): |
| conf = SparkConf().set("spark.ui.showConsoleProgress", "false") |
| sc = SparkContext(appName="PythonStatusAPIDemo", conf=conf) |
| |
| def run(): |
| rdd = sc.parallelize(range(10), 10).map(delayed(2)) |
| reduced = rdd.map(lambda x: (x, 1)).reduceByKey(lambda x, y: x + y) |
| return reduced.map(delayed(2)).collect() |
| |
| result = call_in_background(run) |
| status = sc.statusTracker() |
| while result.empty(): |
| ids = status.getJobIdsForGroup() |
| for id in ids: |
| job = status.getJobInfo(id) |
| print("Job", id, "status: ", job.status) |
| for sid in job.stageIds: |
| info = status.getStageInfo(sid) |
| if info: |
| print("Stage %d: %d tasks total (%d active, %d complete)" % |
| (sid, info.numTasks, info.numActiveTasks, info.numCompletedTasks)) |
| time.sleep(1) |
| |
| print("Job results are:", result.get()) |
| sc.stop() |
| |
| if __name__ == "__main__": |
| main() |