Modifying an Instance of Hadoop

You can modify an existing Hadoop instance based on your requirements.

Procedure

1. From the CommCell Console, expand Client Computers > pseudo-client > Big Data Apps.

2. Right-click the instance and click Properties.

3. In the Instance Properties dialog box, enter the HDFS URI host and user details to connect to the Hadoop cluster:

   1. In the Instance Name box, type the instance name.

   2. In the HDFS URI box, type the Fully Qualified Domain Name (FQDN) of the Hadoop NameNode.

      Important: If you select the default HDFS URI, the URI details are fetched from the core-site.xml file. The core-site.xml file is located under the hadoop_installation_directory/conf/ directory.

   3. Optional: In the HDFS User box, type the Hadoop user name if a non-root user account is used to manage the Hadoop cluster.

   4. In the Hadoop Native Library Path box, type or click Browse to specify the path to the Hadoop native library (libhdfs.so).

      Syntax:

      /path_containing_hadoop_install_directory_native_folder

      Example:

      /usr/hadoop-2.6.1/lib/native

   5. In the JVM Library Path box, type or click Browse to specify the path to the JVM library (libjvm.so).

      Syntax:

      /path_containing_jvm_jre_folder

      Example:

      /usr/lib/jvm/java-XX.xx-openjdk-XX.xx.x86_64/jre/lib/amd64/server

   6. In the Master Node list, select one of the data access nodes as a master node for the instance.

4. Click OK.