Help Center/ MapReduce Service/ Component Operation Guide (LTS)/ Using YARN/ Yarn O&M Management/ Logging In to the YARN Web UI to Check Job Status
Updated on 2025-08-22 GMT+08:00

Logging In to the YARN Web UI to Check Job Status

Scenario

You can log in to the Yarn web UI to view submitted jobs, job running status, and memory consumed by jobs.

Notes and Constraints

By default, the admin user does not have the permissions to manage other components. If the page cannot be opened or the displayed content is incomplete when you access the native UI of a component due to insufficient permissions, you can manually create a user with the permissions to manage that component.

Prerequisites

You have created a service user who can view YARN jobs. For how to create a user, see Creating an HDFS Role.

Accessing the YARN Web UI

  1. Log in to FusionInsight Manager as the user who has the permission to view tasks.

    For details about how to log in to FusionInsight Manager, see Accessing MRS FusionInsight Manager.

  2. Choose Cluster > Services > Yarn.
  3. In the Basic Information area, click ResourceManager(xxx,Active) to go to the YARN web UI.

    Figure 1 Accessing the YARN web UI

Common Functions on the YARN Web UI

  • Viewing job overview information:
    • On the YARN web UI, the All Applications page is displayed by default. You can view the cluster metrics, cluster node metrics, user metrics for username, scheduler metrics, and job list.
    • In the job list, you can view the job submission user, job submission time, job status, and job memory usage.
    • Click Applications in the navigation pane on the left to filter jobs in different states.
    Figure 2 Viewing All Applications information
  • Viewing details about a single job:

    Click the application ID, for example, application_xxx_0001, in the job list to view details about the job.

    • The Diagnostics area displays the exception diagnosis information about the current job.
    • Click Logs in the list area to view job logs.
    Figure 3 Viewing job details
  • Viewing YARN queue information:

    In the navigation pane on the left, click Scheduler to view YARN queues, including queue information and resource usage of each queue.

    Figure 4 Viewing Scheduler information

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