基于spark1.3.1的spark-sql实战－02

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Hive Tables

将HIVE_HOME/conf/hive-site.xml 文件copy到SPARK_HOME/conf/下

 When not configured by the hive-site.xml, the context automatically creates metastore_db and warehouse in the current directory.

// sc is an existing SparkContext.
val sqlContext = new org.apache.spark.sql.hive.HiveContext(sc)

sqlContext.sql("CREATE TABLE IF NOT EXISTS src (key INT, value STRING)")
sqlContext.sql("LOAD DATA LOCAL INPATH 'examples/src/main/resources/kv1.txt' INTO TABLE src")

// Queries are expressed in HiveQL
sqlContext.sql("FROM src SELECT key, value").collect().foreach(println)

JDBC To Other Databases

加载mysql数据库：test,表：t_user_new返回DataFrame

 

查询数据：

 

Performance Tuning

spark 程序操作JDBC：

 

 

 

 

 

 

未完待续～～～

 

 

 

 

 

 

尊重原创，未经允许不得转载：http://blog.csdn.net/stark_summer/article/details/45843803