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https://issues.apache.org/jira/browse/YARN-6741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16088465#comment-16088465
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Naganarasimha G R commented on YARN-6741:
-----------------------------------------
Thanks [~wangda], for looking into this issue.
Have updated the description, and below is the exception trace when only the
testcase is run.
{code}
2017-07-15 10:39:24,483 INFO [main] capacity.ParentQueue
(ParentQueue.java:reinitialize(335)) - root: re-configured queue: a:
numChildQueue= 2, capacity=0.105, absoluteCapacity=0.105,
usedResources=<memory:0, vCores:0>usedCapacity=0.0, numApps=0, numContainers=0
java.io.IOException: Failed to re-init queues : Trying to reinitialize root.b
from root.b
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.reinitialize(CapacityScheduler.java:405)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestCapacityScheduler.testRefreshQueuesWithAllChildQueuesDeleted(TestCapacityScheduler.java:4584)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
{code}
> Deleting all children of a Parent Queue on refresh throws exception
> -------------------------------------------------------------------
>
> Key: YARN-6741
> URL: https://issues.apache.org/jira/browse/YARN-6741
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: capacity scheduler
> Affects Versions: 3.0.0-alpha3
> Reporter: Naganarasimha G R
> Assignee: Naganarasimha G R
> Attachments: YARN-6741.001.patch, YARN-6741.002.patch
>
>
> If we configure CS such that all children of a parent queue are deleted and
> made as a leaf queue, then {{refreshQueue}} operation fails when
> re-initializing the parent Queue
> {code}
> // Sanity check
> if (!(newlyParsedQueue instanceof ParentQueue) || !newlyParsedQueue
> .getQueuePath().equals(getQueuePath())) {
> throw new IOException(
> "Trying to reinitialize " + getQueuePath() + " from "
> + newlyParsedQueue.getQueuePath());
> }
> {code}
> *Expected Behavior:*
> Converting a Parent Queue to leafQueue on refreshQueue needs to be supported.
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