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https://issues.apache.org/jira/browse/HADOOP-13137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15290753#comment-15290753
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Steve Loughran commented on HADOOP-13137:
-----------------------------------------
LGTM. [~cmccabe] —thoughts?
1. No need to wrap the LOG.debug() with a condition; SLF4J is low cost if is
not invoked
2. Could you replace the
{code}
``${dfs.namenode.kerberos.principal}`
{code}
with a simple example like {{namenode/NN1@EXAMPLE}}. Why? avoid confusion to
the reader about when $ expansion takes place: in shell versus in config.
> TraceAdmin should support Kerberized cluster
> --------------------------------------------
>
> Key: HADOOP-13137
> URL: https://issues.apache.org/jira/browse/HADOOP-13137
> Project: Hadoop Common
> Issue Type: Bug
> Components: tracing
> Affects Versions: 2.6.0, 3.0.0-alpha1
> Environment: CDH5.5.1 cluster with Kerberos
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Labels: Kerberos
> Attachments: HADOOP-13137.001.patch, HADOOP-13137.002.patch
>
>
> When I run {{hadoop trace}} command for a Kerberized NameNode, it failed with
> the following error:
> [hdfs@weichiu-encryption-1 root]$ hadoop trace -list -host
> weichiu-encryption-1.vpc.cloudera.com:802216/05/12 00:02:13 WARN ipc.Client:
> Exception encountered while connecting to the server :
> java.lang.IllegalArgumentException: Failed to specify server's Kerberos
> principal name
> 16/05/12 00:02:13 WARN security.UserGroupInformation:
> PriviledgedActionException as:h...@vpc.cloudera.com (auth:KERBEROS)
> cause:java.io.IOException: java.lang.IllegalArgumentException: Failed to
> specify server's Kerberos principal name
> Exception in thread "main" java.io.IOException: Failed on local exception:
> java.io.IOException: java.lang.IllegalArgumentException: Failed to specify
> server's Kerberos principal name; Host Details : local host is:
> "weichiu-encryption-1.vpc.cloudera.com/172.26.8.185"; destination host is:
> "weichiu-encryption-1.vpc.cloudera.com":8022;
> at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:772)
> at org.apache.hadoop.ipc.Client.call(Client.java:1470)
> at org.apache.hadoop.ipc.Client.call(Client.java:1403)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:230)
> at com.sun.proxy.$Proxy11.listSpanReceivers(Unknown Source)
> at
> org.apache.hadoop.tracing.TraceAdminProtocolTranslatorPB.listSpanReceivers(TraceAdminProtocolTranslatorPB.java:58)
> at
> org.apache.hadoop.tracing.TraceAdmin.listSpanReceivers(TraceAdmin.java:68)
> at org.apache.hadoop.tracing.TraceAdmin.run(TraceAdmin.java:177)
> at org.apache.hadoop.tracing.TraceAdmin.main(TraceAdmin.java:195)
> Caused by: java.io.IOException: java.lang.IllegalArgumentException: Failed to
> specify server's Kerberos principal name
> at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:682)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
> at
> org.apache.hadoop.ipc.Client$Connection.handleSaslConnectionFailure(Client.java:645)
> at
> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:733)
> at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:370)
> at org.apache.hadoop.ipc.Client.getConnection(Client.java:1519)
> at org.apache.hadoop.ipc.Client.call(Client.java:1442)
> ... 7 more
> Caused by: java.lang.IllegalArgumentException: Failed to specify server's
> Kerberos principal name
> at
> org.apache.hadoop.security.SaslRpcClient.getServerPrincipal(SaslRpcClient.java:322)
> at
> org.apache.hadoop.security.SaslRpcClient.createSaslClient(SaslRpcClient.java:231)
> at
> org.apache.hadoop.security.SaslRpcClient.selectSaslClient(SaslRpcClient.java:159)
> at
> org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:396)
> at
> org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:555)
> at org.apache.hadoop.ipc.Client$Connection.access$1800(Client.java:370)
> at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:725)
> at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:721)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
> at
> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:720)
> ... 10 more
> It is failing because {{TraceAdmin}} does not set up the property
> {{CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY}}
> Fixing it may require some restructuring, as the NameNode principal
> {{dfs.namenode.kerberos.principal}} is a HDFS property, but TraceAdmin is in
> hadoop-common. Or, specify it with a new command {{-principal}}. Any
> suggestions? Thanks
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