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From "Ramya Sunil (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3819) Exception while renewing delegation token
Date Mon, 06 Feb 2012 20:33:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201557#comment-13201557
] 

Ramya Sunil commented on MAPREDUCE-3819:
----------------------------------------

Exception seen in the RM logs:
{noformat}
ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:<RM
principal>/<RMhostname>@<REALM>  (auth:KERBEROS) cause:java.io.IOException:
Failed to specify server's Kerberos principal name
WARN org.apache.hadoop.ipc.Client: Couldn't setup connection for <RM principal>/<RMhostname>@<REALM>
 to null
ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:<RM
principal>/<RMhostname>@<REALM>  (auth:KERBEROS) cause:java.io.IOException:
Couldn't setup connection for <RM principal>/<RMhostname>@<REALM>  to null
ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:<RM
principal>/<RMhostname>@<REALM>  (auth:KERBEROS) cause:java.io.IOException:
Failed on local exception: java.io.IOException: Couldn't setup connection for <RM principal>/<RMhostname>@<REALM>
 to null; Host Details : local host is: "<RM hostname>/<RM IP>"; destination host
is: ""<NN hostname>
":8020;
ERROR org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer: Exception
renewing tokenIdent: x y z, Kind: HDFS_DELEGATION_TOKEN, Service: <NN IP>:8020. Not
rescheduled
java.io.IOException: Failed on local exception: java.io.IOException: Couldn't setup connection
for <RM principal>/<RMhostname>@<REALM>  to null; Host Details : local host
is: "<RM hostname>/<RM IP>";
 destination host is: ""<NN hostname>t":8020;
        at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:724)
        at org.apache.hadoop.ipc.Client.call(Client.java:1090)
        at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:193)
        at $Proxy24.renewDelegationToken(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient$Renewer.renew(DFSClient.java:619)
        at org.apache.hadoop.security.token.Token.renew(Token.java:312)
        at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$RenewalTimerTask$1.run(DelegationTokenRenewer.java:317)
        at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$RenewalTimerTask$1.run(DelegationTokenRenewer.java:313)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
        at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$RenewalTimerTask.run(DelegationTokenRenewer.java:312)
        at java.util.TimerThread.mainLoop(Timer.java:512)
        at java.util.TimerThread.run(Timer.java:462)
Caused by: java.io.IOException: Couldn't setup connection for <RM principal>/<RMhostname>@<REALM>
 to null
        at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:528)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
        at org.apache.hadoop.ipc.Client$Connection.handleSaslConnectionFailure(Client.java:500)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:584)
        at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:206)
        at org.apache.hadoop.ipc.Client.getConnection(Client.java:1196)
        at org.apache.hadoop.ipc.Client.call(Client.java:1066)
        ... 12 more
Caused by: java.io.IOException: Failed to specify server's Kerberos principal name
        at org.apache.hadoop.security.SaslRpcClient.<init>(SaslRpcClient.java:88)
        at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:407)
        at org.apache.hadoop.ipc.Client$Connection.access$1200(Client.java:206)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:577)
        at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:574)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:573)
        ... 15 more
{noformat}

Seems harmless at the moment but need to debug.
                
> Exception while renewing delegation token
> -----------------------------------------
>
>                 Key: MAPREDUCE-3819
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3819
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.1
>            Reporter: Ramya Sunil
>            Priority: Minor
>


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