public StubbedMergeManager(JobConf conf, ExceptionReporter reporter, CyclicBarrier mergeStart, CyclicBarrier mergeComplete) { super(null, conf, mock(LocalFileSystem.class), null, null, null, null, null, null, null, null, reporter, null, mock(MapOutputFile.class)); mergeThread.setSyncBarriers(mergeStart, mergeComplete); }