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.添加依賴 hadoop和mongodb的連接器 <dependency> <groupId>org.mongodb.mongo-hadoop</groupId> <artifactId> ...
在spark 運算過程中,常常需要連接不同類型的數據庫以獲取或者存儲數據,這里將提及Spark如何連接mysql和MongoDB. 1. 連接mysql , 在1.3版本提出了一個新概念DataFrame ,因此以下方式獲取到的是DataFrame,但是可通過JavaRDD<Row> ...
系統: Ubuntu_18.01 Spark_2.3.1 Scala_2.12.6 MongoDB_3.6.3 參考MongoDB官方網址:https://github.com/mongodb/mongo-spark ...
1、首先安裝Scala插件,File->Settings->Plugins,搜索出Scla插件,點擊Install安裝; 2、File->New Project->maven,新建一個Maven項目,填寫GroupId和ArtifactId; 3、編輯pom.xml ...
一、代碼 package com.sgcc.hj import java.sql.DriverManager import org.apache.spark.rdd.JdbcRDD import org.apache.spark.{SparkConf, SparkContext ...
一、連接SQL 方法一、 方法二、 方法三、讀取Resource上寫的.properties配置: https://www.cnblogs.com/sabertobih/p/13874061.html 二、連接HIVE (一)8 9月寫的,沒有理解,寫 ...
java.lang.Long is not a valid external type for schema of string java.lang.RuntimeExcept ...