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【macOS】【Python】安装Python到虚拟环境的命令

工程与房产肖律师 2024-09-23 阅读 20

idea maven依赖

<dependency>
<groupId>org.mongodb.spark</groupId>
<artifactId>mongo-spark-connector_2.11</artifactId>
<version>2.3.2</version>
</dependency>

val mongoURL = s"mongodb://账号:密码@机器ip:27017"

val builder = SparkSession.builder()
builder.appName(appName)
builder.config("spark.serializer", "org.apache.spark.serializer.KryoSerializer")
builder.config("spark.rdd.compress", "true")
builder.config("dfs.client.socket-timeout", "300000")
//builder.master("local[1]") 本地跑打开
val spark= builder.getOrCreate()

import spark.implicits._
val source = spark.read.mongo(ReadConfig(Map("uri" -> mongoURL, "database" -> "", "collection" -> “”, "batchSize" -> "30000")))
.select("x")

//解析

source.map(it => {
val x= it.getAs[String]("x")

x
})

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