The following table describes the options for defining a mapper transformation, which is required by this entry:
| Option | Definition |
|---|---|
| Transformation |
Specify the transformation that will perform the mapping functions for this job by entering its path or clicking Browse. If you select a transformation that has the same root path as the current transformation, the variable ${Internal.Entry.Current.Directory} will automatically be inserted in place of the common root path. For example, if the current transformation's path is /home/admin/transformation.ktr and you select a transformation in the folder /home/admin/path/sub.ktr than the path will automatically be converted to ${Internal.Entry.Current.Directory}/path/sub.ktr. If you are working with a repository, specify the name of the transformation in your repository. If you are not working with a repository, specify the XML file name of the transformation on your system. Note: Transformations previously specified by reference are automatically
converted to be specified by name within the Pentaho Repository.
|
| Input step name | Specify the name of the step that receives mapping data from Hadoop. It must be a MapReduce Input step. |
| Output step name | Specify the name of the step that passes mapping output back to Hadoop. It must be a MapReduce Output step. |