2. Meet Minimum System Requirements

To run the Hortonworks Data Platform, your system must meet minimum requirements.

 2.1. Hardware Recommendations

Although there is no single hardware requirement for installing HDP, there are some basic guide­lines. You can see sample setups here: Suggested Hardware for a Typical Hadoop Cluster.

 2.2. Operating Systems Requirements

The following operating systems are supported for Beta:

  • 64-bit Red Hat Enterprise Linux (RHEL) 6

  • 64-bit CentOS 6

 2.3. Software Requirements

On each of your hosts:

  • yum [for RHEL or CentOS]

  • rpm

  • scp

  • curl

  • wget

  • unzip

  • tar

  • pdsh

 2.4. Database Requirements

By default, Hive and Oozie use Derby database for its metastore. To use external database for Hive and Oozie metastore, ensure that a MySQL database is deployed and available.

  • You can choose to use a current instance of MySQL or install a new instance for its use. For more information, see Install MySQL (Optional).

  • Ensure that your database administrator creates the following databases and users.

    • For Hive, ensure that your database administrator creates hive_dbname, hive_dbuser, and hive_dbpasswd.

    • For Oozie, ensure that your database administrator creates oozie_dbname, oozie_dbuser, and oozie_dbpasswd.

    [Note]Note

    For instructions on creating users for MySQL, see here.

 2.5. JDK Requirements

Your system must have the correct JDK installed on all the nodes of the cluster. HDP requires Oracle JDK 1.6 update 31.

Use the following instructions to manually install JDK 1.6 update 31:

  1. Check the version. From a terminal window, type:

    java -version
  2. (Optional) Uninstall the Java package if the JDK version is less than v1.6 update 31.

    rpm -qa | grep java
    yum remove {java-1.*}
  3. (Optional) Verify that the default Java package is uninstalled.

    which java
  4. Download the Oracle 64-bit JDK (jdk-6u31-linux-x64.bin) from the Oracle download site. From your browser window, go to http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javase6-419409.html#jdk-6u31-oth-JPR.

    Accept the license agreement and download jdk-6u31-linux-x64.bin to a temporary directory ($JDK_download_directory).

  5. Change directory to the location where you downloaded the JDK and run the install.

    mkdir /usr/jdk1.6.0_31
    cd /usr/jdk1.6.0_31
    chmod u+x $JDK_download_directory/jdk-6u31-linux-x64.bin
    ./$JDK_download_directory/jdk-6u31-linux-x64.bin 
    
  6. Create symbolic links (symlinks) to the JDK.

    mkdir /usr/java
    ln -s /usr/jdk1.6.0_31/jdk1.6.0_31 /usr/java/default
    ln -s /usr/java/default/bin/java /usr/bin/java
    
  7. Set up your environment to define JAVA_HOME to put the Java Virtual Machine and the Java compiler on your path.

    export JAVA_HOME=/usr/java/default
    export PATH=$JAVA_HOME/bin:$PATH
    
  8. Verify if Java is installed in your environment. Execute the following from the command line console:

    java -version

    You should see the following output:

    java version "1.6.0_31"
    Java(TM) SE Runtime Environment (build 1.6.0_31-b04)
    Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01, mixed mode)

 2.6. Virtualization and Cloud Platforms

HDP is certified and supported when running on virtual or cloud platforms (for example, VMware vSphere or Amazon Web Services EC2) as long as the respective guest operating system (OS) is supported by HDP and any issues detected on these platforms are reproducible on the same supported OS installed on bare metal.

See Operating Systems Requirements for the list of supported operating systems for HDP.


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