launch Eclipse, open window window-->preferences, Configure the installation path for Hadoop MapReduce , in the lab environment /usr/local/hadoop, as shown in:
2.2.5 Open the MapReduce view
Click the Eclipse menu window-->show view-->other window, select mapreducer Locations as shown in the following:
once added, a MapReduce view appears in the View area, with the Add button for the blue elephant in the upper right corner of the view area, as shown in
within the Map/reduce location white box, right-click the mouse, Click " New Hadoop Location "
La location name: Name the position to identify it;
l Mapreduce Master: Consistent with $HADOOP _dirconf/mapred-site.xml configuration;
l HDFS Master: _dirconf/with $HADOOP Core-site.xml configuration remains consistent
l user name: Log in to the Hadoop username and you can fill in
Eclipse-based Hadoop application development environment configuration