Wei-Chiu Chuang created HADOOP-15382:

             Summary: Log kinit output in credential renewal thread
                 Key: HADOOP-15382
                 URL: https://issues.apache.org/jira/browse/HADOOP-15382
             Project: Hadoop Common
          Issue Type: Improvement
          Components: security
            Reporter: Wei-Chiu Chuang

We currently run kinit command in a thread to renew kerberos credentials 
            Shell.execCommand(cmd, "-R");
            if (LOG.isDebugEnabled()) {
              LOG.debug("renewed ticket");
It seems useful to log the output of the kinit too.

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