HBase Development Plan

Updated on 2024-08-16 GMT+08:00

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You can quickly learn and master the HBase development process and know key interface functions in a typical application scenario.

Scenario Description

Develop an application to manage information about users who use service A in an enterprise. Table 1 provides the user information. Procedures are as follows:

Create a user information table.
Add users' educational backgrounds and titles to the table.
Query user names and addresses by user ID.
Query information by user name.
Query information about users whose age ranges from 20 to 29.
Collect the number of users and their maximum, minimum, and average age.
Deregister users and delete user data from the user information table.

Delete the user information table after service A ends.

**Table 1** User information
ID	Name	Gender	Age	Address
12005000201	Zhang San	Male	19	Shenzhen City, Guangdong Province
12005000202	Li Wanting	Female	23	Hangzhou City, Zhejiang Province
12005000203	Wang Ming	Male	26	Ningbo City, Zhejiang Province
12005000204	Li Gang	Male	18	Xiangyang City, Hubei Province
12005000205	Zhao Enru	Female	21	Shangrao City, Jiangxi Province
12005000206	Chen Long	Male	32	Zhuzhou City, Hunan Province
12005000207	Zhou Wei	Female	29	Nanyang City, Henan Province
12005000208	Yang Yiwen	Female	30	Wenzhou City, Zhejiang Province
12005000209	Xu Bing	Male	26	Weinan City, Shaanxi Province
12005000210	Xiao Kai	Male	25	Dalian City, Liaoning Province

Data Planning

Proper design of a table structure, RowKeys, and column names enable you to make full use of HBase advantages. In the sample project, a unique ID is used as a RowKey, and columns are stored in the info column family.

CAUTION:

HBase tables are stored in the Namespace:Table name format. If the namespace is not specified when you create a table, the table will be stored in default by default. The HBase namespace is a system table namespace. Do not create service tables or read and write data in it.

Function Description

Determine functions to be developed based on the preceding scenario. Table 2 describes functions to be developed.

**Table 2** Functions to be developed in HBase
No.	Step	Code Implementation
1	Create a table based on the information in Table 1.	For details, see Creating an HBase Table.
2	Import user data.	For details, see Inserting HBase Data.
3	Add an educational background column family, and add educational backgrounds and titles to the user information table.	For details, see Modifying an HBase Table.
4	Query user names and addresses by user ID.	For details, see Reading HBase Data Using the GET Command.
5	Query information by user name.	For details, see Using an HBase Filter.
6	Deregister users and delete user data from the user information table.	For details, see Deleting HBase Data.
7	Delete the user information table after service A ends.	For details, see Deleting an HBase Table.

Key Design Principles

HBase is a distributed database system based on the lexicographic order of RowKeys. The RowKey design has great impact on performance, so the RowKeys must be designed based on specific services.

Parent topic: Developing an HBase Application

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