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https://issues.apache.org/jira/browse/YARN-3369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brahma Reddy Battula updated YARN-3369:
---------------------------------------
Attachment: YARN-3369-003.patch
> Missing NullPointer check in AppSchedulingInfo causes RM to die
> ----------------------------------------------------------------
>
> Key: YARN-3369
> URL: https://issues.apache.org/jira/browse/YARN-3369
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.6.0
> Reporter: Giovanni Matteo Fumarola
> Assignee: Brahma Reddy Battula
> Priority: Blocker
> Attachments: YARN-3369-003.patch, YARN-3369.2.patch, YARN-3369.patch
>
>
> In AppSchedulingInfo.java the method checkForDeactivation() has these 2
> consecutive lines:
> {code}
> ResourceRequest request = getResourceRequest(priority, ResourceRequest.ANY);
> if (request.getNumContainers() > 0) {
> {code}
> the first line calls getResourceRequest and it can return null.
> {code}
> synchronized public ResourceRequest getResourceRequest(
> Priority priority, String resourceName) {
> Map<String, ResourceRequest> nodeRequests = requests.get(priority);
> return (nodeRequests == null) ? {color:red} null :
> nodeRequests.get(resourceName);
> }
> {code}
> The second line dereferences the pointer directly without a check.
> If the pointer is null, the RM dies.
> {quote}2015-03-17 14:14:04,757 FATAL
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in
> handling event type NODE_UPDATE to the scheduler
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.checkForDeactivation(AppSchedulingInfo.java:383)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.decrementOutstanding(AppSchedulingInfo.java:375)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateOffSwitch(AppSchedulingInfo.java:360)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:270)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerApp.allocate(FiCaSchedulerApp.java:142)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1559)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignOffSwitchContainers(LeafQueue.java:1384)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1263)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:816)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainersToChildQueues(ParentQueue.java:588)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainers(ParentQueue.java:449)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.allocateContainersToNode(CapacityScheduler.java:1017)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:1059)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:114)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:739)
> at java.lang.Thread.run(Thread.java:722)
> {color:red} *2015-03-17 14:14:04,758 INFO
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Exiting,
> bbye..*{color} {quote}
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