Akshay Agarwal created YARN-8829:
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Summary: Cluster metrics can fail with IndexOutOfBound Exception
Key: YARN-8829
URL: https://issues.apache.org/jira/browse/YARN-8829
Project: Hadoop YARN
Issue Type: Bug
Reporter: Akshay Agarwal
If no sub clusters are available in Router Based Federation Setup ,cluster
metrics can throw "IndexOutOfBoundException".
Additional check is required for sub cluster is Empty.
*Exception details:*
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:653)
at java.util.ArrayList.get(ArrayList.java:429)
at
org.apache.hadoop.yarn.server.router.clientrm.FederationClientInterceptor.invokeConcurrent(FederationClientInterceptor.java:654)
at
org.apache.hadoop.yarn.server.router.clientrm.FederationClientInterceptor.getClusterMetrics(FederationClientInterceptor.java:604)
at
org.apache.hadoop.yarn.server.router.clientrm.RouterClientRMService.getClusterMetrics(RouterClientRMService.java:232)
at
org.apache.hadoop.yarn.api.impl.pb.service.ApplicationClientProtocolPBServiceImpl.getClusterMetrics(ApplicationClientProtocolPBServiceImpl.java:253)
at
org.apache.hadoop.yarn.proto.ApplicationClientProtocol$ApplicationClientProtocolService$2.callBlockingMethod(ApplicationClientProtocol.java:585)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:872)
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