[ 
https://issues.apache.org/jira/browse/HDDS-3672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Marton Elek updated HDDS-3672:
------------------------------
    Description: 
bin/ozone fs -ls o3fs://ozone.hadoop/benchmarks/TestDFSIO

{code}
2020-05-28 11:46:32,028 INFO protocolPB.Hadoop3OmTransport: RetryProxy: 
java.lang.NullPointerException
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
        at 
org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
        at 
org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)

2020-05-28 11:46:32,029 INFO retry.RetryInvocationHandler: 
com.google.protobuf.ServiceException: 
org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): 
java.lang.NullPointerException
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
        at 
org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
        at 
org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)
, while invoking $Proxy13.submitRequest over 
nodeId=null,nodeAddress=10.120.110.183:9862. Trying to failover after sleeping 
for 2000ms.
2020-05-28 11:46:34,033 INFO protocolPB.Hadoop3OmTransport: RetryProxy: 
java.lang.NullPointerException
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
        at 
org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
        at 
org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)
{code}



  was:
bin/ozone fs -ls o3fs://ozone.hadoop/benchmarks/TestDFSIO
2020-05-28 11:46:32,028 INFO protocolPB.Hadoop3OmTransport: RetryProxy: 
java.lang.NullPointerException
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
        at 
org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
        at 
org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)

2020-05-28 11:46:32,029 INFO retry.RetryInvocationHandler: 
com.google.protobuf.ServiceException: 
org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): 
java.lang.NullPointerException
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
        at 
org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
        at 
org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)
, while invoking $Proxy13.submitRequest over 
nodeId=null,nodeAddress=10.120.110.183:9862. Trying to failover after sleeping 
for 2000ms.
2020-05-28 11:46:34,033 INFO protocolPB.Hadoop3OmTransport: RetryProxy: 
java.lang.NullPointerException
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
        at 
org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
        at 
org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
        at 
org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
        at 
org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)




> Ozone fs failed to list intermediate directory
> ----------------------------------------------
>
>                 Key: HDDS-3672
>                 URL: https://issues.apache.org/jira/browse/HDDS-3672
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: Sammi Chen
>            Assignee: Sammi Chen
>            Priority: Major
>              Labels: pull-request-available
>
> bin/ozone fs -ls o3fs://ozone.hadoop/benchmarks/TestDFSIO
> {code}
> 2020-05-28 11:46:32,028 INFO protocolPB.Hadoop3OmTransport: RetryProxy: 
> java.lang.NullPointerException
>       at 
> org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
>       at 
> org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
>       at 
> org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
>       at 
> org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
>       at 
> org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
>       at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
>       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
>       at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
>       at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:422)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
>       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)
> 2020-05-28 11:46:32,029 INFO retry.RetryInvocationHandler: 
> com.google.protobuf.ServiceException: 
> org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): 
> java.lang.NullPointerException
>       at 
> org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
>       at 
> org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
>       at 
> org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
>       at 
> org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
>       at 
> org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
>       at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
>       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
>       at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
>       at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:422)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
>       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)
> , while invoking $Proxy13.submitRequest over 
> nodeId=null,nodeAddress=10.120.110.183:9862. Trying to failover after 
> sleeping for 2000ms.
> 2020-05-28 11:46:34,033 INFO protocolPB.Hadoop3OmTransport: RetryProxy: 
> java.lang.NullPointerException
>       at 
> org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$KeyInfo$Builder.setFactor(OzoneManagerProtocolProtos.java)
>       at 
> org.apache.hadoop.ozone.om.helpers.OmKeyInfo.getProtobuf(OmKeyInfo.java:392)
>       at 
> org.apache.hadoop.ozone.om.helpers.OzoneFileStatus.getProtobuf(OzoneFileStatus.java:103)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.listStatus(OzoneManagerRequestHandler.java:572)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleReadRequest(OzoneManagerRequestHandler.java:196)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequestDirectlyToOM(OzoneManagerProtocolServerSideTranslatorPB.java:208)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:135)
>       at 
> org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:74)
>       at 
> org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:103)
>       at 
> org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java)
>       at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:528)
>       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
>       at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:999)
>       at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:927)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:422)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
>       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2915)
> {code}



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