private byte[] buildIndexValue(SpanBo span) {
        final Buffer buffer = new AutomaticBuffer(10 + HbaseTableConstants.AGENT_ID_MAX_LEN);
        buffer.putVInt(span.getElapsed());
        buffer.putSVInt(span.getErrCode());
        buffer.putPrefixedString(span.getAgentId());
        return buffer.getBuffer();
    }
find traceids by application name

@author netspider
@author emeroad
collector/src/main/java/com/navercorp/pinpoint/collector/dao/hbase/HbaseApplicationTraceIndexDao.java