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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13590) Retry until TGT expires even if the UGI renewal thread encountered exception
Date Fri, 04 Nov 2016 09:45:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15635825#comment-15635825
] 

Steve Loughran commented on HADOOP-13590:
-----------------------------------------

I so wish we could use L-exp in branch-2...for now keep the await() call, just use an anon
class, at least for the branch-2 version, leaving trunk as is.

Given that the {{assertTrue}} calls are preceded by log@Info calls, how about building a string
which is then logged and used as the text in the asserts?

> Retry until TGT expires even if the UGI renewal thread encountered exception
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-13590
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13590
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 2.8.0, 2.7.3, 2.6.4
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>         Attachments: HADOOP-13590.01.patch, HADOOP-13590.02.patch, HADOOP-13590.03.patch,
HADOOP-13590.04.patch, HADOOP-13590.05.patch, HADOOP-13590.06.patch, HADOOP-13590.07.patch,
HADOOP-13590.08.patch, HADOOP-13590.09.patch
>
>
> The UGI has a background thread to renew the tgt. On exception, it [terminates itself|https://github.com/apache/hadoop/blob/bee9f57f5ca9f037ade932c6fd01b0dad47a1296/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java#L1013-L1014]
> If something temporarily goes wrong that results in an IOE, even if it recovered no renewal
will be done and client will eventually fail to authenticate. We should retry with our best
effort, until tgt expires, in the hope that the error recovers before that.



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