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Updated on 2025-04-14 GMT+08:00
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HBase Data Read/Write Sample Program Development Roadmap

Scenario

Develop an application to manage information about users who use service A in an enterprise. Table 1 provides the user information. The operation process of service A is described as follows:

  • Create a user information table.
  • Add diplomas and titles to the user information table.
  • Query user names and addresses by user ID.
  • Query information by user name.
  • Query information about users whose ages range from 20 to 29.
  • Collect statistics on the number and the maximum, minimum, and average ages of users.
  • Deregister users, and delete user data.
  • Delete the user information table after service A ends.
    Table 1 User information

    ID

    Name

    Gender

    Age

    Address

    12005000201

    Zhang San

    Male

    19

    Shenzhen, Guangdong

    12005000202

    Li Wanting

    Female

    23

    Shijiazhuang, Hebei

    12005000203

    Wang Ming

    Male

    26

    Ningbo, Zhejiang

    12005000204

    Li Gang

    Male

    18

    Xiangyang, Hubei

    12005000205

    Zhao Enru

    Female

    21

    Shangrao, Jiangxi

    12005000206

    Chen Long

    Male

    32

    Zhuzhou, Hunan

    12005000207

    Zhou Wei

    Female

    29

    Nanyang, Henan

    12005000208

    Yang Yiwen

    Female

    30

    Kaixian, Chongqing

    12005000209

    Xu Bing

    Male

    26

    Weinan, Shaanxi

    12005000210

    Xiao Kai

    Male

    25

    Dalian, Liaoning

Data Planning

Proper design of the table structure, RowKeys, and column names can give full play to the advantages of HBase. In this example, the unique ID is used as the RowKey, and columns are stored in the info column family.

HBase tables are stored in Namespace:Table name format. If no namespace is specified when a table is created, the table is stored in default. The hbase namespace is the system table namespace. Do not create service tables or read or write data in the system table namespace.

Function Decomposition

Functions are decomposed based on the preceding service scenario. Table 2 provides the functions to be developed.

Table 2 Functions to be developed in HBase

No.

Procedure

Code Implementation

1

Create a table based on Table 1.

For details, see Creating an HBase Table.

2

Import user data.

For details, see Inserting Data into the HBase Table.

3

Add the Education column family, and add diplomas 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 Table Data Using Get.

5

Query information by user name.

For details, see Reading HBase Table Data Using Filter.

6

To improve query performance, create or delete secondary indexes.

For details, see Creating an HBase Secondary IndexandQuerying HBase Table Data Based on Secondary Indexes.

7

Deregister users, and delete user data.

For details, see Deleting HBase Table Data.

8

Delete the user information table after service A ends.

For details, see Deleting an HBase Table.