[
https://issues.apache.org/jira/browse/HDFS-17406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Haiyang Hu updated HDFS-17406:
------------------------------
Description:
UnresolvedPathException as a normal process of resolving symlinks, the router
server doesn't need to be logged at all .
we need to optimize it, reduce log output.
{code:java}
2024-03-01 14:51:25,084 INFO ipc.Server (Server.java:logException(3417)) [IPC
Server on default port 8888] - IPC Server 965 on default port 8888, call
Call#1313293 Retry#0
org.apache.hadoop.hdfs.protocol.ClientProtocol.getBlockLocations from xxx
org.apache.hadoop.hdfs.protocol.UnresolvedPathException: /xxx/path
_type=local/grass_region=ID/is_cb_shop=0/compact-20730-de870ead-9bdf-49b2-b722-1081781b5bf1.c000.zstd.parquet
at
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkNotSymlink(FSPermissionChecker.java:762)
at
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:721)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:1997)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:2015)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.resolvePath(FSDirectory.java:823)
at
org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getBlockLocations(FSDirStatAndListingOp.java:164)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2265)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2250)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:914)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
467)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:635)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:603)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:587)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1236)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1134)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:2005)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3360)
Caused by:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.protocol.UnresolvedPathException):
/xxx/path
at
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkNotSymlink(FSPermissionChecker.java:762)
at
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:721)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:1997)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:2015)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.resolvePath(FSDirectory.java:823)
at
org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getBlockLocations(FSDirStatAndListingOp.java:164)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2265)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2250)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:914)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
467)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:635)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:603)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:587)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1236)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1134)
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:2005)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3360)
at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1579)
at org.apache.hadoop.ipc.Client.call(Client.java:1511)
at org.apache.hadoop.ipc.Client.call(Client.java:1402)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:261)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:141)
at com.sun.proxy.$Proxy16.getBlockLocations(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:335)
at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invoke(RouterRpcClient.java:776)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeMethod(RouterRpcClient.java:596)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeSequential(RouterRpcClient.java:1132)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeSequential(RouterRpcClient.java:1077)
at
org.apache.hadoop.hdfs.server.federation.router.RouterClientProtocol.getBlockLocations(RouterClientProtocol.java:308)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getBlockLocations(RouterRpcServer.java:624)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
465)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:623)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:591)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:575)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1230)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1128)
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:2005)
{code}
was:
UnresolvedPathException as a normal process of resolving symlinks, the router
server doesn't need to be logged at all .
we need to optimize it, reduce log output.
{code:java}
2024-03-01 14:51:25,084 INFO ipc.Server (Server.java:logException(3417)) [IPC
Server on default port 8888] - IPC Server 965 on default port 8888, call
Call#1313293 Retry#0
org.apache.hadoop.hdfs.protocol.ClientProtocol.getBlockLocations from xxx
Caused by:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.protocol.UnresolvedPathException):
/xxx/path
at
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkNotSymlink(FSPermissionChecker.java:762)
at
org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:721)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:1997)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:2015)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.resolvePath(FSDirectory.java:823)
at
org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getBlockLocations(FSDirStatAndListingOp.java:164)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2265)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2250)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:914)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
467)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:635)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:603)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:587)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1236)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1134)
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:2005)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3360)
at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1579)
at org.apache.hadoop.ipc.Client.call(Client.java:1511)
at org.apache.hadoop.ipc.Client.call(Client.java:1402)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:261)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:141)
at com.sun.proxy.$Proxy16.getBlockLocations(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:335)
at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invoke(RouterRpcClient.java:776)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeMethod(RouterRpcClient.java:596)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeSequential(RouterRpcClient.java:1132)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeSequential(RouterRpcClient.java:1077)
at
org.apache.hadoop.hdfs.server.federation.router.RouterClientProtocol.getBlockLocations(RouterClientProtocol.java:308)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getBlockLocations(RouterRpcServer.java:624)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
465)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:623)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:591)
at
org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:575)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1230)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1128)
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:2005)
{code}
> Suppress UnresolvedPathException in hdfs router log
> ---------------------------------------------------
>
> Key: HDFS-17406
> URL: https://issues.apache.org/jira/browse/HDFS-17406
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Haiyang Hu
> Assignee: Haiyang Hu
> Priority: Major
>
> UnresolvedPathException as a normal process of resolving symlinks, the router
> server doesn't need to be logged at all .
> we need to optimize it, reduce log output.
> {code:java}
> 2024-03-01 14:51:25,084 INFO ipc.Server (Server.java:logException(3417))
> [IPC Server on default port 8888] - IPC Server 965 on default port 8888, call
> Call#1313293 Retry#0
> org.apache.hadoop.hdfs.protocol.ClientProtocol.getBlockLocations from xxx
> org.apache.hadoop.hdfs.protocol.UnresolvedPathException: /xxx/path
> _type=local/grass_region=ID/is_cb_shop=0/compact-20730-de870ead-9bdf-49b2-b722-1081781b5bf1.c000.zstd.parquet
> at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkNotSymlink(FSPermissionChecker.java:762)
> at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:721)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:1997)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:2015)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.resolvePath(FSDirectory.java:823)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getBlockLocations(FSDirStatAndListingOp.java:164)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2265)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2250)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:914)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
> 467)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:635)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:603)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:587)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1236)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1134)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:2005)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3360)
> Caused by:
> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.protocol.UnresolvedPathException):
> /xxx/path
> at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkNotSymlink(FSPermissionChecker.java:762)
> at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:721)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:1997)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkTraverse(FSDirectory.java:2015)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.resolvePath(FSDirectory.java:823)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getBlockLocations(FSDirStatAndListingOp.java:164)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2265)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:2250)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:914)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
> 467)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:635)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:603)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:587)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1236)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1134)
> 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:2005)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3360)
> at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1579)
> at org.apache.hadoop.ipc.Client.call(Client.java:1511)
> at org.apache.hadoop.ipc.Client.call(Client.java:1402)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:261)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Invoker.invoke(ProtobufRpcEngine2.java:141)
> at com.sun.proxy.$Proxy16.getBlockLocations(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:335)
> at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invoke(RouterRpcClient.java:776)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeMethod(RouterRpcClient.java:596)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeSequential(RouterRpcClient.java:1132)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeSequential(RouterRpcClient.java:1077)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterClientProtocol.getBlockLocations(RouterClientProtocol.java:308)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getBlockLocations(RouterRpcServer.java:624)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:
> 465)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:623)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:591)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:575)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1137)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1230)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1128)
> 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:2005)
> {code}
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