[jira] [Commented] (YARN-6044) Resource bar of Capacity Scheduler UI does not show correctly

["Junping Du (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-6044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16122376#comment-16122376 ] 

Junping Du commented on YARN-6044:
----------------------------------

Is this related to YARN-4484? cc [~sunilg].

> Resource bar of Capacity Scheduler UI does not show correctly
> -------------------------------------------------------------
>
>                 Key: YARN-6044
>                 URL: https://issues.apache.org/jira/browse/YARN-6044
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.8.0
>            Reporter: Tao Yang
>            Priority: Minor
>
> Test Environment:
> 1. NodeLable
> yarn rmadmin -addToClusterNodeLabels "label1(exclusive=false)"
> 2. capacity-scheduler.xml
> yarn.scheduler.capacity.root.queues=a,b
> yarn.scheduler.capacity.root.a.capacity=60
> yarn.scheduler.capacity.root.b.capacity=40
> yarn.scheduler.capacity.root.a.accessible-node-labels=label1
> yarn.scheduler.capacity.root.accessible-node-labels.label1.capacity=100
> yarn.scheduler.capacity.root.a.accessible-node-labels.label1.capacity=100
> In this test case, for queue(root.b) in partition(label1), the resource bar(represents absolute-max-capacity) should be 100%(default). The scheduler UI shows correctly after RM started, but when I started an app in queue(root.b) and partition(label1) , the resource bar of this queue is changed from 100% to 0%. 
> For corrent queue(root.a), the queueCapacities of partition(label1) was inited in ParentQueue/LeafQueue constructor and max-capacity/absolute-max-capacity were setted with correct value, due to yarn.scheduler.capacity.root.a.accessible-node-labels is defined in capacity-scheduler.xml
> For incorrent queue(root.b), the queueCapacities of partition(label1) didn't exist at first, the max-capacity and absolute-max-capacity were setted with default value(100%) in PartitionQueueCapacitiesInfo so that Scheduler UI could show correctly. When this queue was allocating resource for partition(label1), the queueCapacities of partition(label1) was created and only used-capacity and absolute-used-capacity were setted in AbstractCSQueue#allocateResource. max-capacity and absolute-max-capacity have to use float default value 0 which are defined in QueueCapacities$Capacities. 
> Whether max-capacity and absolute-max-capacity should have default value(100%)  in Capacities constructor to avoid losing default value if  somewhere called not given?  
> Please feel free to give your suggestions.



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