作用：返回一个由RDD的前n个元素组成的数组
package com.atguigu
import org.apache.spark.rdd.RDD
import org.apache.spark.{SparkConf, SparkContext}
object Action {
def main(args: Array[String]): Unit = {
val conf: SparkConf = new SparkConf().setMaster("local[*]").setAppName("ADCount")
val sc = new SparkContext(conf)
val rdd: RDD[Int] = sc.makeRDD(List(1,4,3,2))
val array: Array[Int] = rdd.take(2)
array.foreach(println)
}
}
1
4
Take someone in： If the police take you in, they take you...
朗朗上口 是轻快自然的过往。 Take chance Take chance，take chance Take c...
Now that a few Covid vaccines have received approval in r...
01 、 Take it easy Take it easy 或 take things easy 用来劝他人不要...
take it upon oneself to take responsibility for something...
分三次，最后一次才正确take 1 : take2: take 3:
执子之手 take your hand 量取体温 take your temperature 呼吸新鲜空气take...
Take with a pinch of salt 将信将疑 Take something with a pinc...
41. allow for (=take into consideration, take into accoun...
#每日一英语# 今天咱们来看一下take a chance和take the chance的差异： a)take ...
本文标题：take()
本文链接：https://www.haomeiwen.com/subject/ajazrctx.html
网友评论