典型场景说明
通过典型场景，我们可以快速学习和掌握HBase冷热分离的开发过程，并且对关键的接口函数有所了解。
场景说明
假定用户开发一个应用程序，用于实时记录和查询城市的气象信息，记录数据如下表：
城市 |
区域 |
时间 |
温度 |
湿度 |
|---|---|---|---|---|
Shenzhen |
Longgang |
2017/7/1 00:00:00 |
28 |
54 |
Shenzhen |
Longgang |
2017/7/1 01:00:00 |
27 |
53 |
Shenzhen |
Longgang |
2017/7/1 02:00:00 |
27 |
52 |
Shenzhen |
Longgang |
2017/7/1 03:00:00 |
27 |
51 |
Shenzhen |
Longgang |
2017/7/1 04:00:00 |
27 |
50 |
Shenzhen |
Longgang |
2017/7/1 05:00:00 |
27 |
49 |
Shenzhen |
Longgang |
2017/7/1 06:00:00 |
27 |
48 |
Shenzhen |
Longgang |
2017/7/1 07:00:00 |
27 |
46 |
Shenzhen |
Longgang |
2017/7/1 08:00:00 |
29 |
46 |
Shenzhen |
Longgang |
2017/7/1 09:00:00 |
30 |
48 |
Shenzhen |
Longgang |
2017/7/1 10:00:00 |
32 |
48 |
Shenzhen |
Longgang |
2017/7/1 11:00:00 |
32 |
49 |
Shenzhen |
Longgang |
2017/7/1 12:00:00 |
33 |
49 |
Shenzhen |
Longgang |
2017/7/1 13:00:00 |
33 |
50 |
Shenzhen |
Longgang |
2017/7/1 14:00:00 |
32 |
50 |
Shenzhen |
Longgang |
2017/7/1 15:00:00 |
32 |
50 |
Shenzhen |
Longgang |
2017/7/1 16:00:00 |
31 |
51 |
Shenzhen |
Longgang |
2017/7/1 17:00:00 |
30 |
51 |
Shenzhen |
Longgang |
2017/7/1 18:00:00 |
30 |
51 |
Shenzhen |
Longgang |
2017/7/1 19:00:00 |
29 |
51 |
Shenzhen |
Longgang |
2017/7/1 20:00:00 |
29 |
52 |
Shenzhen |
Longgang |
2017/7/1 21:00:00 |
29 |
53 |
Shenzhen |
Longgang |
2017/7/1 22:00:00 |
28 |
54 |
Shenzhen |
Longgang |
2017/7/1 23:00:00 |
28 |
54 |
Shenzhen |
Longgang |
2017/7/2 00:00:00 |
28 |
54 |
Shenzhen |
Longgang |
2017/7/2 01:00:00 |
27 |
53 |
Shenzhen |
Longgang |
2017/7/2 02:00:00 |
27 |
52 |
Shenzhen |
Longgang |
2017/7/2 03:00:00 |
27 |
51 |
Shenzhen |
Longgang |
2017/7/2 04:00:00 |
27 |
50 |
Shenzhen |
Longgang |
2017/7/2 05:00:00 |
27 |
49 |
Shenzhen |
Longgang |
2017/7/2 06:00:00 |
27 |
48 |
Shenzhen |
Longgang |
2017/7/2 07:00:00 |
27 |
46 |
Shenzhen |
Longgang |
2017/7/2 08:00:00 |
29 |
46 |
Shenzhen |
Longgang |
2017/7/2 09:00:00 |
30 |
48 |
Shenzhen |
Longgang |
2017/7/2 10:00:00 |
32 |
48 |
Shenzhen |
Longgang |
2017/7/2 11:00:00 |
32 |
49 |
Shenzhen |
Longgang |
2017/7/2 12:00:00 |
33 |
49 |
Shenzhen |
Longgang |
2017/7/2 13:00:00 |
33 |
50 |
Shenzhen |
Longgang |
2017/7/2 14:00:00 |
32 |
50 |
Shenzhen |
Longgang |
2017/7/2 15:00:00 |
32 |
50 |
Shenzhen |
Longgang |
2017/7/2 16:00:00 |
31 |
51 |
Shenzhen |
Longgang |
2017/7/2 17:00:00 |
30 |
51 |
Shenzhen |
Longgang |
2017/7/2 18:00:00 |
30 |
51 |
Shenzhen |
Longgang |
2017/7/2 19:00:00 |
29 |
51 |
Shenzhen |
Longgang |
2017/7/2 20:00:00 |
29 |
52 |
Shenzhen |
Longgang |
2017/7/2 21:00:00 |
29 |
53 |
Shenzhen |
Longgang |
2017/7/2 22:00:00 |
28 |
54 |
Shenzhen |
Longgang |
2017/7/2 23:00:00 |
28 |
54 |
数据规划
合理地设计表结构、行键、列名能充分利用HBase的优势。本样例工程以城市+区域+时间作为RowKey，列都存储在info列族中。
当天整点写入数据，同时一天前数据查询频率较低，节省存储空间设置冷热分离，将一天前数据自动归档到冷存储。
