HBASE-8650 HRegionServer#updateRecoveringRegionLastFlushedSequenceId(HRegion) makes inefficient use of keySet iterator instead of entrySet iterator (Ted Yu)



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1491134 13f79535-47bb-0310-9956-ffa450edef68