Help Center/ MapReduce Service/ Component Operation Guide (Paris Region)/ Using Hue (MRS 3.x or Later)/ Accessing the Hue Web UI
Updated on 2022-12-14 GMT+08:00
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Accessing the Hue Web UI

Scenario

After Hue is installed in an MRS cluster, users can use Hadoop-related components on the Hue web UI.

This section describes how to open the Hue web UI on the MRS cluster.

To access the Hue web UI, you are advised to use a browser that is compatible with the Hue WebUI, for example, Google Chrome 50. The Internet Explorer may be incompatible with the Hue web UI.

Impact on the System

Site trust must be added to the browser when you access Manager and Hue web UI for the first time. Otherwise, the Hue web UI cannot be accessed.

Prerequisites

When Kerberos authentication is enabled, the MRS cluster administrator has assigned the permission for using Hive to the user. For details, see . For example, create a human-machine user named hueuser, add the user to user groups hive (the primary group), hadoop, supergroup, and System_administrator, and assign the System_administrator role.

This user is used to log in to Manager.

Procedure

  1. Log in to the service page.

    For versions earlier than MRS 3.x, click the cluster name on the MRS console and choose Components > Hue.

    For MRS 3.x or later, log in to FusionInsight Manager (for details, see Accessing FusionInsight Manager (MRS 3.x or Later)) and choose Cluster > Services > Hue.

  2. On the right of Hue WebUI, click the link to open the Hue web UI.

    Hue WebUI provides the following functions:

    • Click to execute query statements of Hive and SparkSQL as well as Notebook code. Make sure that Hive and Spark2x have been installed in the MRS cluster before this operation.
    • Click to submit workflow tasks, scheduled tasks, and bundle tasks.
    • Click to view, import, and export tasks on the Hue web UI, such as workflow tasks, scheduled tasks, and bundle tasks.
    • Click to manage metadata in Hive and SparkSQL. Make sure that Hive and Spark2x have been installed in the MRS cluster before this operation.
    • Click to view the directories and files in HDFS. Make sure that HDFS has been installed in the MRS cluster before this operation.
    • Click to view all jobs in the MRS cluster. Make sure that Yarn has been installed in the MRS cluster before this operation.
    • Use to create or query HBase tables. Make sure that the HBase component has been installed in the MRS cluster and the Thrift1Server instance has been added before this operation.
    • Use to import data that is in the CSV or TXT format.
    • When you log in to the Hue web UI as user hueuser for the first time, you need to change the password.
    • After obtaining the URL for accessing the Hue web UI, you can give the URL to other users who cannot access MRS Manager for accessing the Hue web UI.
    • If you perform operations on the Hue WebUI only but not on Manager, you must enter the password of the current login user when accessing Manager again.