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https://issues.apache.org/jira/browse/YARN-4045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14687389#comment-14687389
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Wangda Tan commented on YARN-4045:
----------------------------------
[~tgraves]/[~shahrs87],
I think the case could happen when container reservation interacts with node
disconnect, one example is:
{code}
A cluster has 6 nodes, each node has 20G resource, and usage is
N1-N4, are all used
N5-N6, both of them are used 10G.
An app ask 15G container, assume it is reserved at N5, so total used resource =
20G * 4 + 10G * 2 + 15G (just reserved) = 115G
Then, N6 disconnected, now cluster resource becomes 100G, and used resource =
105G.
{code}
I've just checked fixes, YARN-3361 doesn't have related fixes. And currently we
don't have a fix for above corner case.
Another problem is caused by DRC, from 2.7.1, we have set availableResource =
max(availableResource, Resources.none()).
{code}
childQueue.getMetrics().setAvailableResourcesToQueue(
Resources.max(
calculator,
clusterResource,
available,
Resources.none()
)
);
{code}
But if you're using DRC, if a resource has availableMB < 0 and availableVCores
> 0, it could report such resource > Resources.None(). We may need to fix this
case as well.
Thoughts?
> Negative avaialbleMB is being reported for root queue.
> ------------------------------------------------------
>
> Key: YARN-4045
> URL: https://issues.apache.org/jira/browse/YARN-4045
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.7.1
> Reporter: Rushabh S Shah
>
> We recently deployed 2.7 in one of our cluster.
> We are seeing negative availableMB being reported for queue=root.
> This is from the jmx output:
> {noformat}
> <clusterMetrics>
> ...
> <availableMB>-163328</availableMB>
> ...
> </clusterMetrics>
> {noformat}
> The following is the RM log:
> {noformat}
> 2015-08-10 14:42:28,280 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:28,404 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:30,913 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:30,913 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:33,093 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:33,093 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:35,548 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:35,549 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:39,088 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:39,089 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:39,338 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:39,339 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:39,757 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:39,758 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:43,056 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:43,070 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:44,486 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:44,487 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:44,886 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:44,886 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: assignedContainer queue=root usedCapacity=1.0032743
> absoluteUsedCapacity=1.0032743 used=<memory:5334016, vCores:6212>
> cluster=<memory:5316608, vCores:28320>
> 2015-08-10 14:42:47,401 [ResourceManager Event Processor] INFO
> capacity.ParentQueue: completedContainer queue=root usedCapacity=1.0029854
> absoluteUsedCapacity=1.0029854 used=<memory:5332480, vCores:6202>
> cluster=<memory:5316608, vCores:28320>
> {noformat}
> bq. used=<memory:5332480, vCores:6202> cluster=<memory:5316608, vCores:28320>
> For root queue, usedCapacity is more than totalCapacity
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