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https://issues.apache.org/jira/browse/HADOOP-14497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16046922#comment-16046922
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Yongjun Zhang commented on HADOOP-14497:
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Thanks [~xiaochen]!
> Logs for KMS delegation token lifecycle
> ---------------------------------------
>
> Key: HADOOP-14497
> URL: https://issues.apache.org/jira/browse/HADOOP-14497
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Yongjun Zhang
> Assignee: Xiao Chen
> Fix For: 2.9.0, 3.0.0-alpha4
>
>
> We run into quite some customer cases about authentication failures related
> to KMS delegation token. It would be nice to see a log for each stage of the
> token:
> 1. creation
> 2. renewal
> 3. removal upon cancel
> 4. remove upon expiration
> So that when we correlate the logs for the same DT, we can have a good
> picture about what's going on, and what could have caused the authentication
> failure.
> The same is applicable to other delegation tokens.
> NOTE: When log info about delagation token, we don't want leak user's secret
> info.
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