Edit Mapred site XML file

If you are using MapReduce, you must edit the mapred-site.xml file to indicate where the job history logs are stored and to allow MapReduce jobs to run across platforms.

Perform the following steps to edit the mapred-site.xml file:

1. Navigate to the *<username>*/.pentaho/metastore/pentaho/NamedCluster/Configs/*<user-defined connection name>* directory and open the mapred-site.xml file.

2. Verify the mapreduce.jobhistory.address and mapreduce.app-submission.cross-platform properties are in the mapred-site.xml file. If they are not in the file, add them as follows.

Parameter	Value
mapreduce.jobhistory.address	Set this to the place where job history logs are stored.
mapreduce.app-submission.cross-platform	Add this property to allow MapReduce jobs to run on either Windows client or Linux server platforms. <property> <name>mapreduce.app-submission.cross-platform</name> <value>true</value> </property>

3. Save and close the file.