How to implement connection pool in spark https://github.com/YulinGUO/BigDataTips/blob/master/spark/How%20to%20implement%20connection%20pool%20in ...
MongoDB Connector for Spark Spark Connector Scala Guide spark shell jars mongo spark connector . . . .jar,mongo hadoop core . . .jar,mongo java driver . . .jar import org.apache.spark.sql.SparkSession ...
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How to implement connection pool in spark https://github.com/YulinGUO/BigDataTips/blob/master/spark/How%20to%20implement%20connection%20pool%20in ...
1.添加依赖 hadoop和mongodb的连接器 <dependency> <groupId>org.mongodb.mongo-hadoop</groupId> <artifactId> ...
在spark 运算过程中,常常需要连接不同类型的数据库以获取或者存储数据,这里将提及Spark如何连接mysql和MongoDB. 1. 连接mysql , 在1.3版本提出了一个新概念DataFrame ,因此以下方式获取到的是DataFrame,但是可通过JavaRDD<Row> ...
系统: Ubuntu_18.01 Spark_2.3.1 Scala_2.12.6 MongoDB_3.6.3 参考MongoDB官方网址:https://github.com/mongodb/mongo-spark ...
1、首先安装Scala插件,File->Settings->Plugins,搜索出Scla插件,点击Install安装; 2、File->New Project->maven,新建一个Maven项目,填写GroupId和ArtifactId; 3、编辑pom.xml ...
一、代码 package com.sgcc.hj import java.sql.DriverManager import org.apache.spark.rdd.JdbcRDD import org.apache.spark.{SparkConf, SparkContext ...
一、连接SQL 方法一、 方法二、 方法三、读取Resource上写的.properties配置: https://www.cnblogs.com/sabertobih/p/13874061.html 二、连接HIVE (一)8 9月写的,没有理解,写 ...
java.lang.Long is not a valid external type for schema of string java.lang.RuntimeExcept ...