Aleksandr Kovalenko created AMBARI-16746:
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Summary: Changing and saving the llap percentage slider does not
change the YARN queue configuration
Key: AMBARI-16746
URL: https://issues.apache.org/jira/browse/AMBARI-16746
Project: Ambari
Issue Type: Bug
Reporter: Aleksandr Kovalenko
Assignee: Aleksandr Kovalenko
Priority: Critical
As solution, lets do yarn queue refresh when user explicitly triggers "Restart
LLAP" custom action from service actions menu or under Hive Server Interactive
host component action menu on host details page. This will make sure that when
restart llap happens, it always has the latest capacity-scheduler configs.
We can also optimize to do additional yarn queue refresh only when yarn configs
are found to be stale. At this point lets use request_schedule API to batch
"Refresh yarn queue" and "Restart LLAP" in single API call, so this can sustain
browser refreshes and does not require the additional ui logic for persisting
request state in the local DB or persist API endpoint. We can use following API:
{code}
curl 'http://c6401.ambari.apache.org:8080/api/v1/clusters/c1/request_schedules'
--user admin:admin -H "X-Requested-By: ambari" -i -X POST --data
'[{"RequestSchedule":{"batch":[{"requests":[{"order_id":1,"type":"POST","uri":"/api/v1/clusters/c1/requests","RequestBodyInfo":{"RequestInfo":{"context":"Refresh
YARN Capacity
Scheduler","command":"REFRESHQUEUES","parameters/forceRefreshConfigTags":"capacity-scheduler"},"Requests/resource_filters":[{"service_name":"YARN","component_name":"RESOURCEMANAGER","hosts":"c6401.ambari.apache.org"}]}},{"order_id":2,"type":"POST","uri":"/api/v1/clusters/c1/requests","RequestBodyInfo":{"RequestInfo":{"context":"Restart
LLAP","command":"RESTART_LLAP"},"Requests/resource_filters":[{"service_name":"HIVE","component_name":"HIVE_SERVER_INTERACTIVE","hosts":"c6401.ambari.apache.org"}]}}]},{"batch_settings":{"batch_separation_in_seconds":1,"task_failure_tolerance":0}}]}}]'
{code}
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