Sarjeet Singh created MYRIAD-156:
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Summary: NullPointerException from "Error in handling event type
NODE_RESOURCE_UPDATE to the scheduler"
Key: MYRIAD-156
URL: https://issues.apache.org/jira/browse/MYRIAD-156
Project: Myriad
Issue Type: Bug
Reporter: Sarjeet Singh
The NPE happens where there is a node in cluster becomes unhealthy, and
scheduler removes them from internal data structure. However, when the node
heartbeats and scheduler tries to search for this node, and try to operate on
it, it gets nullPointerException there. Here is the code snippet where this is
causing NPE:
SchedulerNode node = getSchedulerNode(nm.getNodeID());
the node object is Null causing the Null pointer exception.
Here is the RM log for caused exception:
15/10/06 09:18:09 INFO handlers.ResourceOffersEventHandler: Offer not
sufficient for task with, cpu: 4.4, memory: 5504.0, spindles: 4.0, ports: 996
15/10/06 09:18:11 FATAL resourcemanager.ResourceManager: Error in handling
event type NODE_RESOURCE_UPDATE to the scheduler
java.lang.NullPointerException
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler.updateNodeResource(AbstractYarnScheduler.java:548)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.updateNodeResource(FairScheduler.java:1712)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1293)
at
com.ebay.myriad.scheduler.yarn.MyriadFairScheduler.handle(MyriadFairScheduler.java:64)
at
com.ebay.myriad.scheduler.yarn.MyriadFairScheduler.handle(MyriadFairScheduler.java:17)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:693)
at java.lang.Thread.run(Thread.java:745)
15/10/06 09:18:11 INFO resourcemanager.ResourceManager: Exiting, bbye..
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