spark ssc.textFileStream不从目录中流式传输任何文件

Question

我正在尝试使用eclipse(使用maven conf)和2个worker来执行下面的代码,每个都有2个核心或者也尝试过spark-submit.

public class StreamingWorkCount implements Serializable {

    public static void main(String[] args) {
        Logger.getLogger("org.apache.spark").setLevel(Level.WARN);
        JavaStreamingContext jssc = new JavaStreamingContext(
                "spark://192.168.1.19:7077", "JavaWordCount",
                new Duration(1000));
        JavaDStream<String> trainingData = jssc.textFileStream(
                "/home/bdi-user/kaushal-drive/spark/data/training").cache();
        trainingData.foreach(new Function<JavaRDD<String>, Void>() {

            public Void call(JavaRDD<String> rdd) throws Exception {
                List<String> output = rdd.collect();
                System.out.println("Sentences Collected from files " + output);
                return null;
            }
        });

        trainingData.print();
        jssc.start();
        jssc.awaitTermination();
    }
}

并记录该代码

15/01/22 21:57:13 INFO FileInputDStream: New files at time 1421944033000 ms:

15/01/22 21:57:13 INFO JobScheduler: Added jobs for time 1421944033000 ms
15/01/22 21:57:13 INFO JobScheduler: Starting job streaming job 1421944033000 ms.0 from job set of time 1421944033000 ms
15/01/22 21:57:13 INFO SparkContext: Starting job: foreach at StreamingKMean.java:33
15/01/22 21:57:13 INFO DAGScheduler: Job 3 finished: foreach at StreamingKMean.java:33, took 0.000094 s
Sentences Collected from files []
-------------------------------------------
15/01/22 21:57:13 INFO JobScheduler: Finished job streaming job 1421944033000 ms.0 from job set of time 1421944033000 ms
Time: 1421944033000 ms
-------------------------------------------15/01/22 21:57:13 INFO JobScheduler: Starting job streaming job 1421944033000 ms.1 from job set of time 1421944033000 ms


15/01/22 21:57:13 INFO JobScheduler: Finished job streaming job 1421944033000 ms.1 from job set of time 1421944033000 ms
15/01/22 21:57:13 INFO JobScheduler: Total delay: 0.028 s for time 1421944033000 ms (execution: 0.013 s)
15/01/22 21:57:13 INFO MappedRDD: Removing RDD 5 from persistence list
15/01/22 21:57:13 INFO BlockManager: Removing RDD 5
15/01/22 21:57:13 INFO FileInputDStream: Cleared 0 old files that were older than 1421943973000 ms: 
15/01/22 21:57:13 INFO FileInputDStream: Cleared 0 old files that were older than 1421943973000 ms: 
15/01/22 21:57:13 INFO ReceivedBlockTracker: Deleting batches ArrayBuffer()

问题是,我没有从目录中的文件中获取数据.请帮我.

Answer 1

尝试使用另一个目录,然后在作业运行时将这些文件复制到该目录.

Answer 2

有同样的问题。这是我的代码：

lines = jssc.textFileStream("file:///Users/projects/spark/test/data');

TextFileSTream非常敏感；我最终做的是：

1. Run Spark program
2. touch datafile
3. mv datafile datafile2
4. mv datafile2  /Users/projects/spark/test/data

做到了。