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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-13590) Retry until TGT expires even if the UGI renewal thread encountered exception
Date Sat, 10 Sep 2016 00:31:20 GMT
Xiao Chen created HADOOP-13590:
----------------------------------

             Summary: 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
    Affects Versions: 0.22.0
            Reporter: Xiao Chen
            Assignee: Xiao Chen


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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