public String toDescriptiveString() {
    long relTime = EnvironmentEdgeManager.currentTime() - stamp;
    return hri.getRegionNameAsString() + " state=" + state + ", ts=" + new Date(stamp) + " ("
      + (relTime / 1000) + "s ago)" + ", server=" + serverName;
  }
A slower (but more easy-to-read) stringification
hbase-client/src/main/java/org/apache/hadoop/hbase/master/RegionState.java