Help Center/ MapReduce Service/ Component Operation Guide (Normal)/ Using Hue (MRS 3.x or Later)/ Typical Application Scenarios of the Hue Web UI/ Hive on Hue
Updated on 2024-12-11 GMT+08:00
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Hive on Hue

Hue provides the Hive GUI management function so that users can query Hive data in GUI mode.

How to Use Query Editor

Access the Hue web UI. For details, see Accessing the Hue Web UI.

In the navigation tree on the left, click and choose Hive. The Hive page is displayed.

  • Running Hive HQL statements

    Select the target database on the left. You can also click in the upper right corner and enter the target database name to search for the target database.

    Enter a Hive HQL statement in the text box and click or press Ctrl+Enter to run the HQL statement. The execution result is displayed on the Result tab page.

  • Analyzing Hive HQL statements

    Select the target database on the left, enter the Hive HQL statement in the text box, and click to compile the HQL statement and check whether the statement is correct. The execution result is displayed under the text editing box.

  • Saving HQL statements

    Enter the Hive HQL statement in the text box, click in the upper right corner, and enter the name and description. You can view the saved statements on the Saved Queries tab page.

  • Viewing historical records

    Click Query History to view the HQL running status. You can view the history of all the statements or only the saved statements. If many historical records exist, you can enter keywords in the text box to search for desired records.

  • Configuring advanced query

    Click in the upper right corner to configure the file, function, and settings.

  • Viewing the information of shortcut keys

    Click in the upper right corner to view information about all shortcut keys.

How to Use Metadata Browser

Access the Hue web UI.

  • Viewing metadata of Hive tables

    Click in the navigation tree on the left and click a table name. The metadata of the Hive table is displayed.

  • Managing metadata of Hive tables

    On the metadata information page of a Hive table:

    • Click Import in the upper right corner to import data.
    • Click Overview to view the location of the table file in the PROPERTIES field.

      View the field information of each column in a Hive table and manually add description information. Note that the added description information is not the field comments in the Hive table.

    • Click Sample to browse data.
  • Managing Hive metadata tables

    Click in the left list to create a table based on the uploaded file in the database. You can also manually create a table.

The Hue page is used to view and analyze data such as files and tables. Do not perform high-risk management operations such as deleting objects on the page. If an operation is required, you are advised to perform the operation on each component after confirming that the operation has no impact on services. For example, you can use the HDFS client to perform operations on HDFS files and use the Hive client to perform operations on Hive tables.

Typical Scenarios

On the Hue page, create a Hive table as follows:

  1. Click at the upper left corner of Hue web UI and select the Hive instance to be operated to enter the Hive command execution page.
  2. Enter an HQL statement in the command input box, for example:

    create table hue_table(id int,name string,company string) row format delimited fields terminated by ',' stored as textfile;

    Click to execute the HQL statements.

    Figure 1 Executing a statement

  3. Enter the following command in the command input box:

    show tables;

    Click to view the created table hue_table in Result.