Remove Parameter	committer : OutputCommitter in method public ReduceTaskAttemptImpl(id TaskId, attempt int, eventHandler EventHandler, jobFile Path, partition int, numMapTasks int, conf JobConf, taskAttemptListener TaskAttemptListener, committer OutputCommitter, jobToken Token<JobTokenIdentifier>, credentials Credentials, clock Clock, appContext AppContext) from class org.apache.hadoop.mapred.ReduceTaskAttemptImpl