45f3d457_orter_plugin_for_MR___ASF_JIRA__Protection
[Class] org.apache.hadoop.mapreduce.task.reduce.ShuffleClientMetrics [Annotation] Annotated as Public, Unstable [Reason] Passed to shuffle() method in external MapOutput. [Protection] 
Changed from package protected to public
[MAPREDUCE-2454] Allow external sorter plugin for MR - ASF JIRA