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 HiveQLsqlContext.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~~~

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