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https://issues.apache.org/jira/browse/HADOOP-12664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15802074#comment-15802074
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Steve Loughran commented on HADOOP-12664:
-----------------------------------------

interesting point. For short-lived clients, you don't need to worry about 
renewal: will this impact startup time there?

> UGI auto-renewer does not verify kinit availability during initialization
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-12664
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12664
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Arpit Agarwal
>            Assignee: Ray Chiang
>            Priority: Minor
>              Labels: supportability
>         Attachments: HADOOP-12664.001.patch, HADOOP-12664.002.patch
>
>
> UGI auto-renewer does not verify that {{hadoop.kerberos.kinit.command}} is in 
> the path during initialization. If not available, the auto-renewal thread 
> will hit an error during TGT renewal. We recently saw a case where it 
> manifests as transient errors during client program execution which can be 
> hard to track down without UGI logging.
> It seems like {{kinit}} availability should be verified during initialization 
> to make the behavior more predictable.



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