private RowMapper<List<SpanBo>> getSpanMapper(SpanQuery spanQuery) {
        return spanMapperFactory.getSpanMapper(spanQuery.getSpanFilter());
    }
@author Woonduk Kang(emeroad)
@author Taejin Koo
web/src/main/java/com/navercorp/pinpoint/web/dao/hbase/HbaseTraceDaoV2.java