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author | zsxwing <zsxwing@gmail.com> | 2015-07-01 11:59:24 -0700 |
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committer | Tathagata Das <tathagata.das1565@gmail.com> | 2015-07-01 11:59:24 -0700 |
commit | 75b9fe4c5ff6f206c6fc9100563d625b39f142ba (patch) | |
tree | 8b7e9a8de0003a8525845f84ef548e76fc9d0729 /examples | |
parent | b8faa32875aa560cdce340266d898902a920418d (diff) | |
download | spark-75b9fe4c5ff6f206c6fc9100563d625b39f142ba.tar.gz spark-75b9fe4c5ff6f206c6fc9100563d625b39f142ba.tar.bz2 spark-75b9fe4c5ff6f206c6fc9100563d625b39f142ba.zip |
[SPARK-8378] [STREAMING] Add the Python API for Flume
Author: zsxwing <zsxwing@gmail.com>
Closes #6830 from zsxwing/flume-python and squashes the following commits:
78dfdac [zsxwing] Fix the compile error in the test code
f1bf3c0 [zsxwing] Address TD's comments
0449723 [zsxwing] Add sbt goal streaming-flume-assembly/assembly
e93736b [zsxwing] Fix the test case for determine_modules_to_test
9d5821e [zsxwing] Fix pyspark_core dependencies
f9ee681 [zsxwing] Merge branch 'master' into flume-python
7a55837 [zsxwing] Add streaming_flume_assembly to run-tests.py
b96b0de [zsxwing] Merge branch 'master' into flume-python
ce85e83 [zsxwing] Fix incompatible issues for Python 3
01cbb3d [zsxwing] Add import sys
152364c [zsxwing] Fix the issue that StringIO doesn't work in Python 3
14ba0ff [zsxwing] Add flume-assembly for sbt building
b8d5551 [zsxwing] Merge branch 'master' into flume-python
4762c34 [zsxwing] Fix the doc
0336579 [zsxwing] Refactor Flume unit tests and also add tests for Python API
9f33873 [zsxwing] Add the Python API for Flume
Diffstat (limited to 'examples')
-rw-r--r-- | examples/src/main/python/streaming/flume_wordcount.py | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/examples/src/main/python/streaming/flume_wordcount.py b/examples/src/main/python/streaming/flume_wordcount.py new file mode 100644 index 0000000000..091b64d8c4 --- /dev/null +++ b/examples/src/main/python/streaming/flume_wordcount.py @@ -0,0 +1,55 @@ +# +# 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. +# + +""" + Counts words in UTF8 encoded, '\n' delimited text received from the network every second. + Usage: flume_wordcount.py <hostname> <port> + + To run this on your local machine, you need to setup Flume first, see + https://flume.apache.org/documentation.html + + and then run the example + `$ bin/spark-submit --jars external/flume-assembly/target/scala-*/\ + spark-streaming-flume-assembly-*.jar examples/src/main/python/streaming/flume_wordcount.py \ + localhost 12345 +""" +from __future__ import print_function + +import sys + +from pyspark import SparkContext +from pyspark.streaming import StreamingContext +from pyspark.streaming.flume import FlumeUtils + +if __name__ == "__main__": + if len(sys.argv) != 3: + print("Usage: flume_wordcount.py <hostname> <port>", file=sys.stderr) + exit(-1) + + sc = SparkContext(appName="PythonStreamingFlumeWordCount") + ssc = StreamingContext(sc, 1) + + hostname, port = sys.argv[1:] + kvs = FlumeUtils.createStream(ssc, hostname, int(port)) + lines = kvs.map(lambda x: x[1]) + counts = lines.flatMap(lambda line: line.split(" ")) \ + .map(lambda word: (word, 1)) \ + .reduceByKey(lambda a, b: a+b) + counts.pprint() + + ssc.start() + ssc.awaitTermination() |