Apache Hive Connector for JAVA

Apache Hive Connector lets you connect to the Apache Hive engine to query petabytes of data in distributed storage using SQL.

In this article you will learn how to integrate Apache Hive data in JAVA. We will use high-performance Apache Hive Connector to easily connect to Apache Hive and then access the data inside JAVA.

While direct JDBC connections are possible, the aim of this article is to show you how to connect to Apache Hive via a gateway. One reason you would want this is to control accessibility to Apache Hive in one central place.

Let's follow the steps below to see how we can accomplish that!

Download Documentation

Prerequisites

Before we begin, make sure you meet the following prerequisite: Java Runtime Environment (JRE) or Java Development Kit (JDK) must be installed on your system.

If your JDBC Driver targets a different Java version (e.g., 11 / 17 / 21), install the corresponding or newer Java version.

If you already have a JRE installed, you can try using it too. However, if you experience any issues, we recommend using one of the distributions mentioned above (you can install an additional JRE next to the existing one; just don't forget to configure the default Java in the Windows Environment Variables).

Download Apache Hive JDBC driver

To connect to Apache Hive in , you will have to download JDBC driver for it, which we will use in later steps. Let's perform these little steps right away:

  1. Visit MVN Repository.
  2. Download the JDBC driver, and save it locally, e.g. to D:\Drivers\JDBC\hive-jdbc-standalone.jar.
  3. Make sure to download the standalone version of the driver to avoid Java library dependency errors, e.g., hive-jdbc-4.0.1-standalone.jar.
  4. Done! That was easy, wasn't it? Let's proceed to the next step.

Create Data Source in Data Gateway based on ZappySys JDBC Bridge Driver

In this section we will create a data source for Apache Hive in Data Gateway. Let's follow these steps to accomplish that:

  1. Download and install ODBC PowerPack.

  2. Search for gateway in Windows Start Menu and open ZappySys Data Gateway Configuration:

    Opening Data Gateway

  3. Go to Users tab and follow these steps to add a Data Gateway user:

    • Click Add button
    • In Login field enter username, e.g., john
    • Then enter a Password
    • Check Is Administrator checkbox
    • Click OK to save
    Data Gateway - Adding User

  4. Now we are ready to add a data source:

    • Click Add button
    • Give Datasource a name (have it handy for later)
    • Then select Native - ZappySys JDBC Bridge Driver
    • Finally, click OK
    ApacheHiveDSN
    ZappySys JDBC Bridge Driver
    Data Gateway - Adding data source

  5. Now, we need to configure the JDBC connection in the new ODBC data source. Simply enter the Connection string, credentials, configure other settings, and then click Test Connection button to test the connection:

    ApacheHiveDSN
    jdbc:hive2://hive-instance-host-name:10000/default
    D:\Drivers\JDBC\hive-jdbc-standalone.jar
    []
    JDBC-ODBC Bridge driver data source settings

    Use these values when setting parameters:

    • Connection string: jdbc:hive2://hive-instance-host-name:10000/default
    • JDBC driver file(s): D:\Drivers\JDBC\hive-jdbc-standalone.jar
    • Connection parameters: []

  6. You should see a message saying that connection test is successful:

    ODBC connection test is successful

    Otherwise, if you are getting an error, check out our Community for troubleshooting tips.

  7. We are at the point where we can preview a SQL query. For more SQL query examples visit JDBC Bridge documentation:

    ApacheHiveDSN
    -- Basic SELECT with a WHERE clause
SELECT
    id,
    name,
    salary
FROM employees
WHERE department = 'Sales';
    JDBC ODBC Bridge data source preview 
    -- Basic SELECT with a WHERE clause
SELECT
    id,
    name,
    salary
FROM employees
WHERE department = 'Sales';
    You can also click on the <Select Table> dropdown and select a table from the list.

    The ZappySys JDBC Bridge Driver acts as a transparent intermediary, passing SQL queries directly to the JDBC driver, which then handles the query execution. This means the Bridge Driver simply relays the SQL query without altering it.

    Some JDBC drivers don't support INSERT/UPDATE/DELETE statements, so you may get an error saying "action is not supported" or a similar one. Please, be aware, this is not the limitation of ZappySys JDBC Bridge Driver, but is a limitation of the specific JDBC driver you are using.

  8. Click OK to finish creating the data source.

  9. Very important step. Now, after creating or modifying the data source make sure you:

    • Click the Save button to persist your changes.
    • Hit Yes, once asked if you want to restart the Data Gateway service.

    This will ensure all changes are properly applied:

    ZappySys Data Gateway - Save Changes
    Skipping this step may result in the new settings not taking effect and, therefore you will not be able to connect to the data source.

Read data in Java from the DSN

  1. Java code to get the data:

    "jdbc:sqlserver://localhost:5000;databasename=ApacheHiveDSN;user=john;password=test"
    Java code to Make ZappySys Driver Data Source Call

  2. When you run the code it will make the API call and read the data:
    Java code ZappySys Driver Data Source Results

  3. Here is Java program's code in text format: 

    
//Step-1: Install ZappySys ODBC PowerPack and Configure Data Gateway

//Step-2:Assuming the Microsoft SQL Server JDBC Driver is in below folder
//C:\Program Files\Microsoft Jdbc Driver 6.0 for SQL Server\sqljdbc_6.0\enu\auth\x64
package padaone;

import java.sql.*;

public class zappy {

    public static void main(String[] args) {

        // Create a variable for the connection string.
        String connectionUrl = "jdbc:sqlserver://localhost:5000;databasename=ApacheHiveDSN;user=test;password=test";

        // Declare the JDBC objects.
        Connection con = null;
        Statement stmt = null;
        ResultSet rs = null;

            try {
                // Establish the connection.
                Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
                con = DriverManager.getConnection(connectionUrl);

                // Create and execute an SQL statement that returns some data.
                String SQL = "SELECT Country , SUM(UnitPrice * Quantity) Total " 
                           + "FROM value " 
                           + "GROUP BY Country "
                           + "WITH (SRC='https://services.odata.org/V3/Northwind/Northwind.svc/Invoices?$format=json')";
                stmt = con.createStatement();
                rs = stmt.executeQuery(SQL);

                // Iterate through the data in the result set and display it.
                while (rs.next()) {
                    System.out.println(rs.getString(1) + " " + rs.getString(2));
                }
            }

        // Handle any errors that may have occurred.
        catch (Exception e) {
            e.printStackTrace();
        } 
        
        finally {
            if (rs != null) try { rs.close(); } catch (Exception e) {}
            if (stmt != null) try { stmt.close(); } catch (Exception e) {}
            if (con != null) try { con.close(); } catch (Exception e) {}
        }
    }
}

Troubleshooters & resources (JDBC Bridge Driver)

Below are some useful community articles to help you troubleshoot and configure the ZappySys JDBC Bridge Driver:

Conclusion

In this article we showed you how to connect to Apache Hive in JAVA and integrate data without any coding, saving you time and effort. It's worth noting that ZappySys JDBC Bridge Driver allows you to connect not only to Apache Hive, but to any Java application that supports JDBC (just use a different JDBC driver and configure it appropriately).

We encourage you to download Apache Hive Connector for JAVA and see how easy it is to use it for yourself or your team.

If you have any questions, feel free to contact ZappySys support team. You can also open a live chat immediately by clicking on the chat icon below.

Download Apache Hive Connector for JAVA Documentation

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Download Apache Hive Connector for JAVA Documentation