Spark Scala流式CSV [英] Spark Scala Streaming CSV

问题描述

我是新的在Spark / Scala。我知道如何加载CSV文件：

I am new in Spark/Scala. I know how to load CSV files:

    sqlContext.read.format("csv")

以及如何读取文本流和文件流：

and how to read text streams and file streams:

    scc.textFileStream("""file:///c:\path\filename""");
    scc.fileStream[LongWritable, Text, TextInputFormat](...)

要阅读文本 CSV格式的流格式？谢谢，Levi

but how to read text stream in CSV format? Thanks, Levi

推荐答案

这里：

val ssc = new StreamingContext(sparkConf, Seconds(5))


    // Create the FileInputDStream on the directory
    val lines = ssc.textFileStream("file:///C:/foo/bar")

    lines.foreachRDD(rdd => {
        if (!rdd.isEmpty()) {
          println("RDD row count: " + rdd.count())
         // Now you can convert this RDD to DataFrame/DataSet and perform business logic.  

        }
      }
    })

    ssc.start()
    ssc.awaitTermination()
  } 

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