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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5039) Applications ACCEPTED but not starting
Date Thu, 05 May 2016 22:32:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-5039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15273240#comment-15273240
] 

Jason Lowe commented on YARN-5039:
----------------------------------

Can you also double-check that the startup messages in the RM log show that the queues are
configured with it off?  The conf screen always loads a fresh config, so it doesn't always
reflect what is actually being used.  Look for "reservationsContinueLooking = " lines in the
RM log when it dumps the queue config on startup.

I'll also look into reproducing it on our end.  This is a pretty simple setup with just two
users and two total apps, so hopefully this is straightforward to replicate.

> Applications ACCEPTED but not starting
> --------------------------------------
>
>                 Key: YARN-5039
>                 URL: https://issues.apache.org/jira/browse/YARN-5039
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.2
>            Reporter: Miles Crawford
>         Attachments: Screen Shot 2016-05-04 at 1.57.19 PM.png, Screen Shot 2016-05-04
at 2.41.22 PM.png, resource-manager-application-starts.log.gz, yarn-yarn-resourcemanager-ip-10-12-47-144.log.gz
>
>
> Often when we submit applications to an incompletely utilized cluster, they sit, unable
to start for no apparent reason.
> There are multiple nodes in the cluster with available resources, but the resourcemanger
logs show that scheduling is being skipped. The scheduling is skipped because the application
itself has reserved the node? I'm not sure how to interpret this log output:
> {code}
> 2016-05-04 20:19:21,315 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Trying to fulfill reservation for application application_1462291866507_0025
on node: ip-10-12-43-54.us-west-2.compute.internal:8041
> 2016-05-04 20:19:21,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue
(ResourceManager Event Processor): Reserved container  application=application_1462291866507_0025
resource=<memory:50688, vCores:1> queue=default: capacity=1.0, absoluteCapacity=1.0,
usedResources=<memory:1894464, vCores:33>, usedCapacity=0.7126589, absoluteUsedCapacity=0.7126589,
numApps=2, numContainers=33 usedCapacity=0.7126589 absoluteUsedCapacity=0.7126589 used=<memory:1894464,
vCores:33> cluster=<memory:2658304, vCores:704>
> 2016-05-04 20:19:21,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Skipping scheduling since node ip-10-12-43-54.us-west-2.compute.internal:8041
is reserved by application appattempt_1462291866507_0025_000001
> 2016-05-04 20:19:22,232 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Trying to fulfill reservation for application application_1462291866507_0025
on node: ip-10-12-43-53.us-west-2.compute.internal:8041
> 2016-05-04 20:19:22,232 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue
(ResourceManager Event Processor): Reserved container  application=application_1462291866507_0025
resource=<memory:50688, vCores:1> queue=default: capacity=1.0, absoluteCapacity=1.0,
usedResources=<memory:1894464, vCores:33>, usedCapacity=0.7126589, absoluteUsedCapacity=0.7126589,
numApps=2, numContainers=33 usedCapacity=0.7126589 absoluteUsedCapacity=0.7126589 used=<memory:1894464,
vCores:33> cluster=<memory:2658304, vCores:704>
> 2016-05-04 20:19:22,232 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Skipping scheduling since node ip-10-12-43-53.us-west-2.compute.internal:8041
is reserved by application appattempt_1462291866507_0025_000001
> 2016-05-04 20:19:22,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Trying to fulfill reservation for application application_1462291866507_0025
on node: ip-10-12-43-54.us-west-2.compute.internal:8041
> 2016-05-04 20:19:22,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue
(ResourceManager Event Processor): Reserved container  application=application_1462291866507_0025
resource=<memory:50688, vCores:1> queue=default: capacity=1.0, absoluteCapacity=1.0,
usedResources=<memory:1894464, vCores:33>, usedCapacity=0.7126589, absoluteUsedCapacity=0.7126589,
numApps=2, numContainers=33 usedCapacity=0.7126589 absoluteUsedCapacity=0.7126589 used=<memory:1894464,
vCores:33> cluster=<memory:2658304, vCores:704>
> 2016-05-04 20:19:22,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Skipping scheduling since node ip-10-12-43-54.us-west-2.compute.internal:8041
is reserved by application appattempt_1462291866507_0025_000001
> {code}



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