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Hive JDBC Client Java Example

posted on Nov 20th, 2016

Apache Hive

Apache Hive is a data warehouse infrastructure built on top of Hadoop for providing data summarization, query, and analysis. Hive gives an SQL-like interface to query data stored in various databases and file systems that integrate with Hadoop. The traditional SQL queries must be implemented in the MapReduce Java API to execute SQL applications and queries over a distributed data. Hive provides the necessary SQL abstraction to integrate SQL-like Queries (HiveQL) into the underlying Java API without the need to implement queries in the low-level Java API. Since most of the data warehousing application work with SQL based querying language, Hive supports easy portability of SQL-based application to Hadoop.

Pre Requirements

1) A machine with Ubuntu 14.04 LTS operating system

2) Apache Hadoop 2.6.4 pre installed (How to install Hadoop on Ubuntu 14.04)

3) Apache Hive 2.1.0 pre installed (How to Install Hive on Ubuntu 14.04)

Hive JDBC Client Java Example

Step 1 - Change the directory to /usr/local/hadoop/sbin

cd /usr/local/hadoop/sbin

Step 2 - Start all hadoop daemons

start-all.sh

Step 3 - Change the directory to /usr/local/hive/bin

$ cd $HIVE_HOME/bin

Step 4 - Start hiveserver2 daemon

$ hiveserver2

OR

$ hive --service hiveserver2 &

Step 5 - Create a java project and add these jar files to your java project.

$HIVE_HOME/lib/*.jar
$HADOOP_HOME/share/hadoop/mapreduce/*.jar
$HADOOP_HOME/share/hadoop/common/*.jar

HiveCreateDB.java

import java.sql.SQLException;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.DriverManager;

public class HiveCreateDB {

	//private static String driverName = "org.apache.hadoop.hive.jdbc.HiveDriver";
private static String driverName = "org.apache.hive.jdbc.HiveDriver";

	public static void main(String[] args) throws SQLException,
			ClassNotFoundException {
		// Register driver and create driver instance
		Class.forName(driverName);
		// get connection
		Connection con = DriverManager.getConnection(
				"jdbc:hive2://localhost:10000/default", "", "");
		Statement stmt = con.createStatement();
		stmt.execute("CREATE DATABASE newdatabase");
		System.out.println("Database userdb created successwdbfully.");
		con.close();
	}
}

Step 6 - Compile and run HiveCreateDB.java

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Labels : Hive Installation With Derby Database Metastore   Hive Installation With MySQL Database Metastore   Beeline Client Usage   hiveserver2 and Web UI usage   WordCount hiveQL Execution   Hive Metastore Configuration   Hive Command Line Interface   Hive Shell Commands usage   Hive Distributed Cache   HDFS and Linux Commands in hive shell   Customizing hive logs   Database Commnds Usage   Table Commands Usage   Hive Partitioning Configuration   Hive Bucketing Configuration   UDFs Java Example   UDAFs Java Example   UDTF Java Example   Hive Web Interface (HWI)   HiveQL Examples