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  1. Preface
  2. Introduction to Hadoop Integration
  3. Before You Begin
  4. Amazon EMR Integration Tasks
  5. Azure HDInsight Integration Tasks
  6. Cloudera CDH Integration Tasks
  7. Hortonworks HDP Integration Tasks
  8. MapR Integration Tasks
  9. Appendix A: Connections

Hadoop Integration Guide

Hadoop Integration Guide

Uninstall for Amazon EMR, Azure HDInsight, and MapR

Uninstall for Amazon EMR, Azure HDInsight, and MapR

Complete the following prerequisite tasks before you uninstall Big Data Management:
  1. Verify that the Big Data Management administrator can run
    sudo
    commands.
  2. If you are uninstalling Big Data Management in a cluster environment, configure the root user to use a passwordless Secure Shell (SSH) connection between the machine where you want to run the Big Data Management uninstall and all of the nodes where Big Data Management is installed.
  3. If you are uninstalling Big Data Management in a cluster environment using the
    HadoopDataNodes
    file, verify that the
    HadoopDataNodes
    file contains the IP addresses or machine host names of each of the nodes in the Hadoop cluster from which you want to uninstall Big Data Management. The
    HadoopDataNodes
    file is located on the node from where you want to launch the Big Data Management installation. You must add one IP address or machine host name of the nodes in the Hadoop cluster for each line in the file.
Complete the following tasks to perform the uninstallation:
  1. Log in to the machine as root user. The machine you log in to depends on the Big Data Management environment and uninstallation method.
    • To uninstall in a single node environment, log in to the machine on which Big Data Management is installed.
    • To uninstall in a cluster environment using the HADOOP_HOME environment variable, log in to the primary name node.
    • To uninstall in a cluster environment using the
      HadoopDataNodes
      file, log in to any node.
  2. Run the following command to start the uninstallation in console mode:
    bash InformaticaHadoopInstall.sh sh InformaticaHadoopInstall.sh ./InformaticaHadoopInstall.sh
  3. Press
    y
    to accept the Big Data Management terms of agreement.
  4. Press
    Enter
    .
  5. Select
    3
    to uninstall Big Data Management.
  6. Press
    Enter
    .
  7. Select the uninstallation option, depending on the Big Data Management environment:
    • Select
      1
      to uninstall Big Data Management from a single node environment.
    • Select
      2
      to uninstall Big Data Management from a cluster environment.
  8. Press
    Enter
    .
  9. If you are uninstalling Big Data Management in a cluster environment, select the uninstallation option, depending on the uninstallation method:
    • Select
      1
      to uninstall Big Data Management from the primary name node.
    • Select
      2
      to uninstall Big Data Management using the
      HadoopDataNodes
      file.
  10. Press
    Enter
    .
  11. If you are uninstalling Big Data Management from a cluster environment from the primary name node, type the absolute path for the Hadoop installation directory. Start the path with a slash.
The uninstaller deletes all of the Big Data Management binary files from the following directory:
/<Big Data Management installation directory>/Informatica
In a cluster environment, the uninstaller deletes the binary files from all nodes within the Hadoop cluster.

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