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https://issues.apache.org/jira/browse/HDFS-6312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14032912#comment-14032912
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Alejandro Abdelnur commented on HDFS-6312:
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Patch LGTM.
[~daryn], this is fixing a problem in its own merit. Do you see any issue
committing this JIRA separately for your larger fix? (BTW, any JIRA for it?)
> WebHdfs HA failover is broken on secure clusters
> ------------------------------------------------
>
> Key: HDFS-6312
> URL: https://issues.apache.org/jira/browse/HDFS-6312
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 3.0.0, 2.4.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Blocker
> Attachments: HDFS-6312.attempted.patch
>
>
> When webhdfs does a failover, it blanks out the delegation token. This will
> cause subsequent operations against the other NN to acquire a new token.
> Tasks cannot acquire a token (no kerberos credentials) so jobs will fail.
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