[GitHub] spark pull request: SPARK-2548 [STREAMING] JavaRecoverableWordCoun...

[tdas <gi...@git.apache.org>]

Github user tdas commented on a diff in the pull request:

    https://github.com/apache/spark/pull/2564#discussion_r18251478
  
    --- Diff: examples/src/main/java/org/apache/spark/examples/streaming/JavaRecoverableNetworkWordCount.java ---
    @@ -0,0 +1,160 @@
    +/*
    + * 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.
    + */
    +
    +package org.apache.spark.examples.streaming;
    +
    +import java.io.File;
    +import java.io.IOException;
    +import java.nio.charset.Charset;
    +import java.util.Arrays;
    +import java.util.regex.Pattern;
    +
    +import scala.Tuple2;
    +import com.google.common.collect.Lists;
    +import com.google.common.io.Files;
    +
    +import org.apache.spark.SparkConf;
    +import org.apache.spark.api.java.JavaPairRDD;
    +import org.apache.spark.api.java.function.FlatMapFunction;
    +import org.apache.spark.api.java.function.Function2;
    +import org.apache.spark.api.java.function.PairFunction;
    +import org.apache.spark.streaming.Durations;
    +import org.apache.spark.streaming.Time;
    +import org.apache.spark.streaming.api.java.JavaDStream;
    +import org.apache.spark.streaming.api.java.JavaPairDStream;
    +import org.apache.spark.streaming.api.java.JavaReceiverInputDStream;
    +import org.apache.spark.streaming.api.java.JavaStreamingContext;
    +import org.apache.spark.streaming.api.java.JavaStreamingContextFactory;
    +
    +/**
    + * Counts words in text encoded with UTF8 received from the network every second.
    + *
    + * Usage: JavaRecoverableNetworkWordCount <hostname> <port> <checkpoint-directory> <output-file>
    + *   <hostname> and <port> describe the TCP server that Spark Streaming would connect to receive
    + *   data. <checkpoint-directory> directory to HDFS-compatible file system which checkpoint data
    + *   <output-file> file to which the word counts will be appended
    + *
    + * <checkpoint-directory> and <output-file> must be absolute paths
    + *
    + * To run this on your local machine, you need to first run a Netcat server
    + *
    + *      `$ nc -lk 9999`
    + *
    + * and run the example as
    + *
    + *      `$ ./bin/run-example org.apache.spark.examples.streaming.JavaRecoverableNetworkWordCount \
    + *              localhost 9999 ~/checkpoint/ ~/out`
    + *
    + * If the directory ~/checkpoint/ does not exist (e.g. running for the first time), it will create
    + * a new StreamingContext (will print "Creating new context" to the console). Otherwise, if
    + * checkpoint data exists in ~/checkpoint/, then it will create StreamingContext from
    + * the checkpoint data.
    + *
    + * To run this example in a local standalone cluster with automatic driver recovery,
    --- End diff --
    
    Can you remove this reference to spark standalone cluster mode? These instructions are old and irrelevant. Please remove from both examples :)


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