tLibraryLoad MapReduce properties (deprecated)

Library

Click on the [...] button to to open the Module dialog box from which you can import the library to be used.

For more information, see Importing an external library.

Dynamic Libs

Lib Paths: Enter the access path to your library, between double quotation marks.

Import

Enter the Java code required to import, if required, the external library used in the code editing field of the Basic settings tab of the components such as tJavaMR in a Map/Reduce Job.

Global Variables

ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl + Space to access the variable list and choose the variable to use from it.

For further information about variables, see Talend Studio User Guide.

Usage rule

In a Talend Map/Reduce Job, this component is used standalone. It generates native Map/Reduce code that can be executed directly in Hadoop.

You need to use the Hadoop Configuration tab in the Run view to define the connection to a given Hadoop distribution for the whole Job.

This connection is effective on a per-Job basis.

For further information about a Talend Map/Reduce Job, see the sections describing how to create, convert and configure a Talend Map/Reduce Job of the Talend Big Data Getting Started Guide .

Note that in this documentation, unless otherwise explicitly stated, a scenario presents only Standard Jobs, that is to say traditional Talend data integration Jobs, and non Map/Reduce Jobs.

Limitation

The library is loaded locally.