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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3529

TokenCache does not cache viewfs credentials correctly

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 0.23.0
    • Fix Version/s: 0.23.1
    • Component/s: mrv2
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      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

        1. MR3529_v4.txt
          10 kB
          Siddharth Seth
        2. MR3529_v3.txt
          9 kB
          Siddharth Seth
        3. MR3529_v2.txt
          9 kB
          Siddharth Seth
        4. MR3529_v1.txt
          3 kB
          Siddharth Seth

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              • Assignee:
                sseth Siddharth Seth
                Reporter:
                sseth Siddharth Seth
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                • Created:
                  Updated:
                  Resolved: