[jira] [Created] (YARN-5498) [Usability] Make UI continue to work and render already loaded models even when there is no network connection

["Gour Saha (JIRA)" <ji...@apache.org>]

Gour Saha created YARN-5498:
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             Summary: [Usability] Make UI continue to work and render already loaded models even when there is no network connection
                 Key: YARN-5498
                 URL: https://issues.apache.org/jira/browse/YARN-5498
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Gour Saha


I load the UI in my browser and traverse to all the tabs. Then I disconnect the network. The tabs "Queues", "Applications" and "Nodes" continue to work even when there is no network connection. However, the "Cluster Overview" tab does not work. This tab should also continue to show the already loaded models, for better usability.

We should also add a small message on the top of the UI when the network connection is gone. It is very similar to what gmail or other modern applications do today. An exception of type {color:red}net::ERR_INTERNET_DISCONNECTED{color} is already thrown, which can be caught and this small message can be marked visible.




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