default HRegionLocation getRegionLocation(byte[] row) throws IOException {
    return getRegionLocation(row, false);
  }
Finds the region on which the given row is being served. Does not reload the cache.
@param row Row to find.
@return Location of the row.
@throws IOException if a remote or network exception occurs
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionLocator.java