[jira] [Created] (YARN-8720) CapacityScheduler does not enforce yarn.scheduler.capacity..maximum-allocation-mb/vcores when configured

["Tarun Parimi (JIRA)" <ji...@apache.org>]

Tarun Parimi created YARN-8720:
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             Summary: CapacityScheduler does not enforce yarn.scheduler.capacity.<queue-path>.maximum-allocation-mb/vcores when configured
                 Key: YARN-8720
                 URL: https://issues.apache.org/jira/browse/YARN-8720
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacity scheduler, capacityscheduler, resourcemanager
    Affects Versions: 2.7.0
            Reporter: Tarun Parimi


The value of yarn.scheduler.capacity.<queue-path>.maximum-allocation-mb/vcores is not strictly enforced when applications request containers. An InvalidResourceRequestException is thrown only when the ResourceRequest is greater than the global value of yarn.scheduler.maximum-allocation-mb/vcores . So for an example configuration such as below,

 
{code:java}
yarn.scheduler.maximum-allocation-mb=4096
yarn.scheduler.capacity.root.test.maximum-allocation-mb=2048
{code}
 

The below DSShell command runs successfully and asks an AM container of size 4096MB which is greater than max 2048MB configured in test queue.
{code:java}
yarn jar $YARN_HOME/hadoop-yarn-applications-distributedshell.jar -num_containers 1 -jar $YARN_HOME/hadoop-yarn-applications-distributedshell.jar -shell_command "sleep 60" -container_memory=4096 -master_memory=4096 -queue=test{code}
Instead it should not launch the application and fail with InvalidResourceRequestException . The child container however will be requested with size 2048MB as DSShell AppMaster does the below check before ResourceRequest ask with RM.
{code:java}
// A resource ask cannot exceed the max.
if (containerMemory > maxMem) {
 LOG.info("Container memory specified above max threshold of cluster."
 + " Using max value." + ", specified=" + containerMemory + ", max="
 + maxMem);
 containerMemory = maxMem;
}{code}
 



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