Himanshu Maurya created AMBARI-26650:
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Summary: Ambari Web React: Add Create Widget wizard for service
metrics dashboards
Key: AMBARI-26650
URL: https://issues.apache.org/jira/browse/AMBARI-26650
Project: Ambari
Issue Type: Story
Reporter: Himanshu Maurya
Assignee: Himanshu Maurya
Fix For: 3.1.0
h2. Summary
The {{capacity-scheduler.xml}} properties on the YARN Advanced Configs tab were
rendered as one input field per property, which does not match the classic
Ember UI's dedicated combined-textarea editor and made bulk edits
(adding/removing queues, editing multiple properties at once) awkward and
error-prone. Saving a {{capacity-scheduler.xml}} change also silently skipped
the "Refresh YARN Queues" prompt that the classic UI shows, so the new
configuration was not actually applied to the running ResourceManager until a
manual refresh.
h2. Changes
* {{capacity-scheduler.xml}} properties are now edited as a single combined
{{{}key=value{}}}-per-line textarea, folded into the existing
"CapacityScheduler" section (displayed as "Scheduler") instead of being
rendered as their own separate accordion item with one field per property. This
matches the classic Ember UI's {{App.CapacitySceduler}} widget.
* Editing the textarea parses each {{key=value}} line back into the individual
property map: existing properties are updated in place, new lines add new
properties (cloned from an existing property's metadata), and removed lines
delete the corresponding property.
* After successfully saving configs, if any of the saved changes touched
{{{}capacity-scheduler.xml{}}}, a confirmation popup now prompts the user to
"Refresh YARN Queues." Accepting submits a YARN {{REFRESHQUEUES}} action
against all hosts running the ResourceManager component, matching the classic
UI's {{ComponentActionsByConfigs#showPopup}} behavior.
h2. Impact
Capacity Scheduler queue configuration can now be edited in bulk via a single
textarea (matching the classic UI's editing experience), and saved changes are
properly propagated to the running ResourceManager via the Refresh YARN Queues
prompt instead of requiring a manual follow-up action.
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