Spark SQL Hive Support Demo

前提:

1、spark1.0的包编译时指定支持hive:./make-distribution.sh --hadoop 2.3.0-cdh5.0.0 --with-yarn --with-hive --tgz

2、安装完spark1.0;

3、安装与hadoop对应的CDH版本的hive;

 

Spark SQL 支持Hive案例:

1、将hive-site.xml配置文件拷贝到$SPARK_HOME/conf下

hive-site.xml文件内容形如:

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>
    <property>
      <name>javax.jdo.option.ConnectionURL</name>
      <value>jdbc:mysql://hadoop000:3306/hive?createDatabaseIfNotExist=true</value>
    </property>
    <property>
      <name>javax.jdo.option.ConnectionDriverName</name>
      <value>com.mysql.jdbc.Driver</value>
    </property>

    <property>
      <name>javax.jdo.option.ConnectionUserName</name>
      <value>root</value>
    </property>

    <property>
      <name>javax.jdo.option.ConnectionPassword</name>
      <value>root</value>
    </property>
</configuration>

 

2、启动spark: spark-shell

案例来源于spark官方文档:http://spark.apache.org/docs/latest/sql-programming-guide.html

//创建hiveContext
val hiveContext = new org.apache.spark.sql.hive.HiveContext(sc)

// 隐式转换
import hiveContext._

//创建hive表
hql("CREATE TABLE IF NOT EXISTS hive.kv_src (key INT, value STRING)")

//加载数据到hive表
hql("LOAD DATA LOCAL INPATH ‘/home/spark/app/spark-1.0.0-bin-2.3.0-cdh5.0.0/examples/src/main/resources/kv1.txt‘ INTO TABLE hive.kv_src")

//通过hql查询
hql("FROM hive.kv_src SELECT key, value").collect().foreach(println)

 

 

 

 

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Spark SQL Hive Support Demo

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