[jira] [Created] (AMBARI-25704) Ambari Yarn QM page does not support newly added Capacity scheduler paramaters.

["Iqbal Singh (Jira)" <ji...@apache.org>]

Iqbal Singh created AMBARI-25704:
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             Summary: Ambari Yarn QM page does not support newly added Capacity scheduler paramaters.
                 Key: AMBARI-25704
                 URL: https://issues.apache.org/jira/browse/AMBARI-25704
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
    Affects Versions: 2.7.6
            Reporter: Iqbal Singh
         Attachments: Screen Shot 2022-07-07 at 1.35.51 PM.png

While updating Hadoop 3.0.1 YARN parameters, we found that the Ambari UI  does not have the flexibility to add new key-value options under the {*}"YARN Queue Manager"{*}. As a result, it overwrites the changes pushed to the scheduler section under the YARN service in the Ambari server. 

- We need to add new config parameters to support the per-node variables for the Capacity scheduler under the Scheduler section.

The parameters we added are below and we needed this due to YARN-8896 and YARN-8513 bugs. We updated the default value from -1 in version 3.1.1 to something similar in 3.3.3 as 100 to avoid production issues.

 

*Hadoop Parameters:*

yarn.scheduler.capacity.per-node-heartbeat.maximum-container-assignments=100
yarn.scheduler.capacity.per-node-heartbeat.multiple-assignments-enable=true

 

_This made the Yarn Queue Manager page useless, and we cant use it to update the queue configurations._



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