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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13590) Retry until TGT expires even if the UGI renewal thread encountered exception
Date Tue, 27 Sep 2016 19:21:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiao Chen updated HADOOP-13590:
-------------------------------
    Attachment: HADOOP-13590.07.patch

Fixing checkstyle.
[~stevel@apache.org], please feel free to share your thoughts. Thank you.

> 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-13590.07.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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