Description
viewfs returns a list of delegation tokens for the actual namenodes. TokenCache caches these based on the actual service name - subsequent calls to TokenCache end up trying to get a new set of tokens.
Tasks which happen to access TokenCache fail when using viewfs - since they end up trying to get a new set of tokens even though the tokens are already available.
Error: java.io.IOException: Delegation Token can be issued only with kerberos or web authentication
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getDelegationToken(FSNamesystem.java:4027)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getDelegationToken(NameNodeRpcServer.java:281)
at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:365)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1490)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1486)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1152)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1484)
at org.apache.hadoop.ipc.Client.call(Client.java:1085)
at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:193)
at $Proxy8.getDelegationToken(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:100)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:65)
at $Proxy8.getDelegationToken(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.getDelegationToken(DFSClient.java:456)
at org.apache.hadoop.hdfs.DistributedFileSystem.getDelegationToken(DistributedFileSystem.java:812)
at org.apache.hadoop.hdfs.DistributedFileSystem.getDelegationTokens(DistributedFileSystem.java:839)
at org.apache.hadoop.fs.viewfs.ChRootedFileSystem.getDelegationTokens(ChRootedFileSystem.java:311)
at org.apache.hadoop.fs.viewfs.ViewFileSystem.getDelegationTokens(ViewFileSystem.java:490)
at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:144)
at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:91)
at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodes(TokenCache.java:84)
This will likely require some changes in viewfs/hdfs - will open a Jira with details.
Attachments
Attachments
Issue Links
- blocks
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PIG-2392 merge join resutls in ERROR 2176
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- Resolved
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- is blocked by
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- Closed
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