[YARN-8470] Fair scheduler exception with SLS

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Wilfred Spiegelenburg
• Reporter: Miklos Szegedi
• Created: 27/Jun/18 23:45
• Updated: 26/Feb/20 08:29
• Resolved: 14/Jan/20 22:30

Description

I ran into the following exception with sls:
2018-06-26 13:34:04,358 ERROR resourcemanager.ResourceManager: Received RMFatalEvent of type CRITICAL_THREAD_CRASH, caused by a critical thread, FSPreemptionThread, that exited unexpectedly: java.lang.NullPointerException
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSPreemptionThread.identifyContainersToPreemptOnNode(FSPreemptionThread.java:207)
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSPreemptionThread.identifyContainersToPreemptForOneContainer(FSPreemptionThread.java:161)
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSPreemptionThread.identifyContainersToPreempt(FSPreemptionThread.java:121)
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSPreemptionThread.run(FSPreemptionThread.java:81)

Issue Links

• duplicates: YARN-9984 FSPreemptionThread can cause NullPointerException while app is unregistered with containers running on a node
• links to: GitHub Pull Request #416
• links to: GitHub Pull Request #416