public static short getApplicationTypeFromRowKey(byte[] bytes, int offset) {
        Objects.requireNonNull(bytes, "bytes");

        short applicationNameLength = ByteArrayUtils.bytesToShort(bytes, offset);
        return ByteArrayUtils.bytesToShort(bytes, offset + applicationNameLength + 2);
    }
<pre>
rowkey format = "APPLICATIONNAME(max 24bytes)" + apptype(2byte) + "TIMESTAMP(8byte)"
</pre>

@param applicationName
@param timestamp
@return
commons-server/src/main/java/com/navercorp/pinpoint/common/server/util/ApplicationMapStatisticsUtils.java