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Before you start

These steps assume that you have already followed the Set Active Hadoop Distribution instructions and are completing your shim setup for a CDH 5.x distribution. If you have not, or don't understand what any of this means, you should read Configuring Pentaho for your Hadoop Distro and Version.

Configuring MapReduce 1

CDH 5.x is configured to use MapReduce 2 by default. If you want to use MapReduce 1 instead, you will need to change a properties file. If you are not sure what version of MapReduce your CDH 5 cluster is using, check with your system administrator.

  1. Navigate to the CDH5.x shim folder located in the hadoop-configurations folder that matches shim you previously configured. For example: cdh50, cdh51 etc. These steps will refer to that directory as cdhXX. This folder is different for each application and is located:
    • DI Server - data-integration-server/pentaho-solutions/system/kettle/plugins/pentaho-big-data-plugin/cdhXX
    • BA Server - biserver-ee/pentaho-solutions/system/kettle/plugins/pentaho-big-data-plugin/cdhXX
    • Spoon - data-integration/plugins/pentaho-big-data-plugin/cdhXX
  2. Edit the config.properties file.
  3. Change the shim.current.config property from mr2 to mr1. It should look like: 
              shim.current.config=mr1
  4. Save and close the file.
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