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https://issues.apache.org/jira/browse/HDFS-9732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15213131#comment-15213131
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Allen Wittenauer commented on HDFS-9732:
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bq. do we have any other occasion that we want a "frozen" output then CLI?
Double check with the compat guidelines, but I'm fairly confident that the only
output that can't change is the CLI. Web output, for example, is specifically
called out as Unstable. (Because if it wasn't, the deadly web UI redo in
2.5/2.6 that basically screwed over most of the people with security deployed
wouldn't have went in.)
> Remove DelegationTokenIdentifier.toString() —for better logging output
> ----------------------------------------------------------------------
>
> Key: HDFS-9732
> URL: https://issues.apache.org/jira/browse/HDFS-9732
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.7.2
> Reporter: Steve Loughran
> Assignee: Yongjun Zhang
> Attachments: HADOOP-12752-001.patch, HDFS-9732.001.patch,
> HDFS-9732.002.patch
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> HDFS {{DelegationTokenIdentifier.toString()}} adds some diagnostics info,
> owner, sequence number. But its superclass,
> {{AbstractDelegationTokenIdentifier}} contains a lot more information,
> including token issue and expiry times.
> Because {{DelegationTokenIdentifier.toString()}} doesn't include this data,
> information that is potentially useful for kerberos diagnostics is lost.
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