sc textfile
scala> val textFile = sc.textFile("README.md") textFile: org.apache.spark.rdd.RDD[String] = README.md MapPartitionsRDD[1] at textFile at <console>:25. ,scala> val textFile = sc.textFile("README.md") textFile: org.apache.spark.rdd.RDD[String] = README.md MapPartitionsRDD[1] at textFile at <console>:25.
| 相關軟體 Spark 資訊 | |
|---|---|
 sc textfile 相關參考資料
Examples | Apache Spark - The Apache Software Foundation!
text_file = sc.textFile("hdfs://...") counts = text_file.flatMap(lambda line: line.split(" ")) - .map(lambda word: (word, 1)) - .reduceByKey(lambda a, b: a + b) counts. https://spark.apache.org Quick Start - Spark 2.1.0 Documentation - Apache Spark
scala> val textFile = sc.textFile("README.md") textFile: org.apache.spark.rdd.RDD[String] = README.md MapPartitionsRDD[1] at textFile at <console>:25. https://spark.apache.org Quick Start - Spark 2.1.2 Documentation - Apache Spark
scala> val textFile = sc.textFile("README.md") textFile: org.apache.spark.rdd.RDD[String] = README.md MapPartitionsRDD[1] at textFile at <console>:25. https://spark.apache.org Quick Start - Spark 2.4.4 Documentation - Apache Spark
Let's make a new Dataset from the text of the README file in the Spark source directory: scala> val textFile = spark.read.textFile("README.md") textFile: ... https://spark.apache.org Spark Shell · Spark 編程指南繁體中文版
Spark 的shell 作為一個强大的交互式數據分析工具，提供了一個簡單的方式來學習API。 ... scala> val linesWithSpark = textFile.filter(line => line.contains("Spark")) ... https://taiwansparkusergroup.g Spark中加载本地（或者hdfs）文件以及spark使用SparkContext ...
Spark中加载本地(或者hdfs)文件以及spark使用SparkContext实例的textFile读取多个文件夹(嵌套)下的多个数据文件. 在正常调用过程中，难免需要 ... https://blog.csdn.net spark中的SparkContext实例的textFile使用的小技巧 - CSDN博客
网上很多例子，包括官网的例子，都是用textFile来加载一个文件创建RDD，类似sc.textFile("hdfs://ss:8020/hdfs/input")textFile的参数是一个path,. https://blog.csdn.net Spark从外部读取数据之textFile - HFUTLXM的博客- CSDN博客
val path = "Current1.txt，Current2.txt，" //Current fold file; val rdd1 = sc.textFile(path,2). 从当前读取两个文件，分别是Cuttent1.txt和Current2.txt. https://blog.csdn.net Spark从外部读取数据之textFile - legotime的博客- CSDN博客
val path = "Current1.txt，Current2.txt，" //Current fold file val rdd1 = sc.textFile(path,2) 从当前读取两个文件，分别是Cuttent1.txt和Current2.txt. https://blog.csdn.net 實用詳解spark的讀取方法textFile和wholeTextFiles - IT閱讀
2 測試sc.textFile（）和sc.wholeTextFiles()的效果. sc.testFile() 如圖: sc.wholetextFiles() 如下圖: 注意一定要仔細觀察紅色方框圈起來的差異，經過 ... https://www.itread01.com |