public long getCellTTL() {
        if (!hasCellTTL()) {
          return 0;
        } else {
          return Bytes.toLong(lineBytes, getColumnOffset(cellTTLColumnIndex),
            getColumnLength(cellTTLColumnIndex));
        }
      }
@param columnsSpecification the list of columns to parser out, comma separated. The row key
                            should be the special token TsvParser.ROWKEY_COLUMN_SPEC
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/ImportTsv.java