suppress empty part files output

[Shushant Arora]

while using multipleoutputs we use ,
LazyOutputFormat.setOutputFormatClass(job, TextOutputFormat.class);

to suppress default empty part files from reducers. Whats the syntax of
using this in
  <map-reduce> action of oozie ?or in in xml file for ToolsRuner.

Is mapreduce.output.lazyoutputformat.outputformat? the desired property?