As its counter-part HDFS-1167: new parameter needs to be added to the system-test configuration file to serve 'cluster restart with new configuration' feature
Integrated in Hadoop-Mapreduce-trunk #643 (See https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk/643/)
Integrated in Hadoop-Mapreduce-trunk-Commit #554 (See https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/554/)
Same as for HDFS, no need to review.
I have just committed it.