We had a DN/NM node that went offline for a while and been removed from the
cluster via Ambari without decommissioning (because it was offline).
When the node came back up, its NM attempted connection to the RM.
Later the RM failed with this exception (dokken is the errant node):
2014-03-03 05:53:28,721 FATAL resourcemanager.ResourceManager
(ResourceManager.java:run(449)) - Error in handling event type NODE_UPDATE to
the scheduler
java.lang.IllegalArgumentException: java.net.UnknownHostException:
dokken.office.datalever.com
at
org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:418)
at
org.apache.hadoop.yarn.server.utils.BuilderUtils.newContainerToken(BuilderUtils.java:247)
at
org.apache.hadoop.yarn.server.resourcemanager.security.RMContainerTokenSecretManager.createContainerToken(RMContainerTokenSecretManager.java:195)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.createContainerToken(LeafQueue.java:1297)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1345)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignOffSwitchContainers(LeafQueue.java:1211)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1170)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:871)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainersToChildQueues(ParentQueue.java:645)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainers(ParentQueue.java:559)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:690)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:734)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:86)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:440)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.net.UnknownHostException: dokken.office.datalever.com
... 15 more
2014-03-03 05:53:28,723 INFO resourcemanager.ResourceManager
(ResourceManager.java:run(453)) - Exiting, bbye..
I can see our error in how this node was removed while not being truly dead,
but I think it shouldn't crash the RM.
Forgive my ignorance ... do you know if this is a known problem?
FYI:
# hadoop version
Hadoop 2.2.0.2.0.6.0-76
Subversion g...@github.com:hortonworks/hadoop.git -r
8656b1cfad13b03b29e98cad042626205e7a1c86
Compiled by jenkins on 2013-10-18T00:19Z
Compiled with protoc 2.5.0
>From source with checksum d23ee1d271c6ac5bd27de664146be2
This command was run using /usr/lib/hadoop/hadoop-common-2.2.0.2.0.6.0-76.jar
Thanks
John
