jiulongzhu created YARN-9838:
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Summary: Using the CapacityScheduler,Apply "movetoqueue" on the
application which CS reserved containers for,will cause "Num Container" and
"Used Resource" in ResourceUsage metrics error
Key: YARN-9838
URL: https://issues.apache.org/jira/browse/YARN-9838
Project: Hadoop YARN
Issue Type: Improvement
Components: capacity scheduler
Affects Versions: 2.7.3
Reporter: jiulongzhu
Fix For: 2.7.3
Attachments: RM_UI_metric_negative.png, RM_UI_metric_positive.png,
bug_fix_capacityScheduler_moveApplication.patch
In some clusters of ours, we are seeing "Used Resource","Used
Capacity","Absolute Used Capacity" and "Num Container" is positive or negative
when the queue is absolutely idle(no RUNNING, no NEW apps...).In extreme cases,
apps couldn't be submitted to the queue that is actually idle but the "Used
Resource" is far more than zero, just like "Container Leak".
Firstly,I found that "Used Resource","Used Capacity" and "Absolute Used
Capacity" use the "Used" value of ResourceUsage kept by AbstractCSQueue, and
"Num Container" use the "numContainer" value kept by LeafQueue.And
AbstractCSQueue#allocateResource and AbstractCSQueue#releaseResource will
change the state value of "numContainer" and "Used". Secondly, by comparing the
values numContainer and ResourceUsageByLabel and QueueMetrics
changed(#allocateContainer and #releaseContainer) logic of applications with
and without "movetoqueue",i found that moving the reservedContainers didn't
modify the "numContainer" value in AbstractCSQueue and "used" value in
ResourceUsage when the application was moved from a queue to another queue.
The metric values changed logic of reservedContainers are allocated,
and moved from $FROM queue to $TO queue, and released.The degree of increase
and decrease is not conservative, the Resource allocated from $FROM queue and
release to $TO queue.
||move reversedContainer||allocate||movetoqueue||release||
|numContainer|increase in $FROM queue|{color:#660000}{color:#660000}$FROM queue
stay the same,$TO queue stay the same{color}{color}|decrease in $TO queue|
|ResourceUsageByLabel(USED)|increase in $FROM queue|{color:#660000}$FROM queue
stay the same,$TO queue stay the same{color}|decrease in $TO queue|
|QueueMetrics|increase in $FROM queue|decrease in $FROM queue, increase in $TO
queue|decrease in $TO queue|
The metric values changed logic of allocatedContainer(allocated,
acquired, running) are allocated, and movetoqueue, and released are absolutely
conservative.
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