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Type:
Bug
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 3.0.0-alpha2
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Fix Version/s: 2.9.0, 3.0.0-alpha4
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Component/s: fairscheduler
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Labels:None
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Target Version/s:
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Hadoop Flags:Reviewed
I have noticed an exception that closes the Application Master occasionally with Fair scheduler.
Caused by: org.apache.hadoop.ipc.RemoteException(java.util.ConcurrentModificationException): java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922) at java.util.HashMap$KeyIterator.next(HashMap.java:956) at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.allocate(FairScheduler.java:1005) at org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService.allocate(ApplicationMasterService.java:532) at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationMasterProtocolPBServiceImpl.allocate(ApplicationMasterProtocolPBServiceImpl.java:60) at org.apache.hadoop.yarn.proto.ApplicationMasterProtocol$ApplicationMasterProtocolService$2.callBlockingMethod(ApplicationMasterProtocol.java:99) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)