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https://issues.apache.org/jira/browse/HADOOP-8688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13433200#comment-13433200
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Steve Loughran commented on HADOOP-8688:
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"Unable to load realm info from SCDynamicStore" is OSX whining about kerberos
stuff -happens a lot, meaningless, no way to disable it (it's coming in at the
java.util.logging stream, too)
> Hadoop in Pseudo-Distributed mode on Mac OS X 10.8
> --------------------------------------------------
>
> Key: HADOOP-8688
> URL: https://issues.apache.org/jira/browse/HADOOP-8688
> Project: Hadoop Common
> Issue Type: Bug
> Environment: Mac OS X 10.8, Java_1.6.0_33-b03-424
> Reporter: Subho Banerjee
> Priority: Minor
>
> When running hadoop on pseudo-distributed mode, the map seems to work, but it
> cannot compute the reduce.
> 12/08/13 08:58:12 INFO mapred.JobClient: Running job: job_201208130857_0001
> 12/08/13 08:58:13 INFO mapred.JobClient: map 0% reduce 0%
> 12/08/13 08:58:27 INFO mapred.JobClient: map 20% reduce 0%
> 12/08/13 08:58:33 INFO mapred.JobClient: map 30% reduce 0%
> 12/08/13 08:58:36 INFO mapred.JobClient: map 40% reduce 0%
> 12/08/13 08:58:39 INFO mapred.JobClient: map 50% reduce 0%
> 12/08/13 08:58:42 INFO mapred.JobClient: map 60% reduce 0%
> 12/08/13 08:58:45 INFO mapred.JobClient: map 70% reduce 0%
> 12/08/13 08:58:48 INFO mapred.JobClient: map 80% reduce 0%
> 12/08/13 08:58:51 INFO mapred.JobClient: map 90% reduce 0%
> 12/08/13 08:58:54 INFO mapred.JobClient: map 100% reduce 0%
> 12/08/13 08:59:14 INFO mapred.JobClient: Task Id :
> attempt_201208130857_0001_m_000000_0, Status : FAILED
> Too many fetch-failures
> 12/08/13 08:59:14 WARN mapred.JobClient: Error reading task outputServer
> returned HTTP response code: 403 for URL:
> http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stdout
> 12/08/13 08:59:14 WARN mapred.JobClient: Error reading task outputServer
> returned HTTP response code: 403 for URL:
> http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stderr
> 12/08/13 08:59:18 INFO mapred.JobClient: map 89% reduce 0%
> 12/08/13 08:59:21 INFO mapred.JobClient: map 100% reduce 0%
> 12/08/13 09:00:14 INFO mapred.JobClient: Task Id :
> attempt_201208130857_0001_m_000001_0, Status : FAILED
> Too many fetch-failures
> Here is what I get when I try to see the tasklog using the links given in the
> output
> http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stderr
> --->
> 2012-08-13 08:58:39.189 java[74092:1203] Unable to load realm info from
> SCDynamicStore
> http://10.1.66.17:50060/tasklog?plaintext=true&attemptid=attempt_201208130857_0001_m_000000_0&filter=stdout
> --->
> I have changed my hadoop-env.sh acoording to Mathew Buckett in
> https://issues.apache.org/jira/browse/HADOOP-7489
> Also this error of Unable to load realm info from SCDynamicStore does not
> show up when I do 'hadoop namenode -format' or 'start-all.sh'
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