public boolean hasCellTTL() {
      return cellTTLColumnIndex != DEFAULT_CELL_VISIBILITY_COLUMN_INDEX;
    }
@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