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https://issues.apache.org/jira/browse/HDFS-3558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399621#comment-13399621
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Ravi Prakash commented on HDFS-3558:
------------------------------------
I should've remembered to check, but I didn't. Colin seems to have solved the
2nd issue in HDFS-3486 already for branch-2 and trunk.
> OfflineImageViewer throws an NPE
> --------------------------------
>
> Key: HDFS-3558
> URL: https://issues.apache.org/jira/browse/HDFS-3558
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.23.3
> Reporter: Ravi Prakash
> Assignee: Ravi Prakash
> Attachments: HDFS-3558.branch-23.patch
>
>
> Courtesy [~mithun]
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.hadoop.security.authentication.util.KerberosName.getShortName(KerberosName.java:371)
> at org.apache.hadoop.security.User.<init>(User.java:48)
> at org.apache.hadoop.security.User.<init>(User.java:43)
> at
> org.apache.hadoop.security.UserGroupInformation.createRemoteUser(UserGroupInformation.java:857)
> at
> org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier.getUser(AbstractDelegationTokenIdentifier.java:91)
> at
> org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier.toString(DelegationTokenIdentifier.java:61)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.ImageLoaderCurrent.processDelegationTokens(ImageLoaderCurrent.java:222)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.ImageLoaderCurrent.loadImage(ImageLoaderCurrent.java:185)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageViewer.go(OfflineImageViewer.java:129)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageViewer.main(OfflineImageViewer.java:250)
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