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Date: Tue, 18 Oct 2011 19:27:10 +0000 (UTC)
From: "Anupam Seth (Commented) (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Commented] (MAPREDUCE-3181) Terasort fails with Kerberos
 exception on secure cluster
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-3181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13129968#comment-13129968 ] 

Anupam Seth commented on MAPREDUCE-3181:
----------------------------------------

Apologies - tried to write a unit test in a few different ways, but without using PowerMockito, I cannot seem to be able to make it non-trivial and non-absurd while actually testing the issue at hand (which is difficult IMO because of the way the default yarn-site.xml is set to be an empty configuration).

Thus, my patch remains as it is. Kindly let me know if you would like me to include the PowerMockito stub or if someone has a better way to unit test, else requesting for +1 review and commit.
                
> Terasort fails with Kerberos exception on secure cluster
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-3181
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3181
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Anupam Seth
>            Assignee: Anupam Seth
>            Priority: Blocker
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-3181-branch0_23.patch, MAPREDUCE-3181-branch0_23.patch
>
>
> We are seeing the following Kerberos exception upon trying to run terasort on secure single and multi-node clusters using the latest build from branch 0.23.
> java.io.IOException: Can't get JobTracker Kerberos principal for use as renewer
>         at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:106)
>         at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:90)
>         at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodes(TokenCache.java:83)
>         at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:205)
>         at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:269)
>         at org.apache.hadoop.examples.terasort.TeraInputFormat.getSplits(TeraInputFormat.java:318)
>         at org.apache.hadoop.examples.terasort.TeraInputFormat.writePartitionFile(TeraInputFormat.java:169)
>         at org.apache.hadoop.examples.terasort.TeraSort.run(TeraSort.java:306)
>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:69)
>         at org.apache.hadoop.examples.terasort.TeraSort.main(TeraSort.java:325)
>         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.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:72)
>         at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:144)
>         at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:68)
>         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.util.RunJar.main(RunJar.java:189)
> Adding debug output shows that the job configuration is not loading up yarn-site.xml causing the above failure to happen.

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