Xiao Chen created HADOOP-13590:
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             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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