[jira] [Created] (OOZIE-1172) Add documentation on how to get Java actions to authenticate properly on Kerberos-enabled clusters

["Robert Kanter (JIRA)" <ji...@apache.org>]

Robert Kanter created OOZIE-1172:
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             Summary: Add documentation on how to get Java actions to authenticate properly on Kerberos-enabled clusters
                 Key: OOZIE-1172
                 URL: https://issues.apache.org/jira/browse/OOZIE-1172
             Project: Oozie
          Issue Type: Improvement
          Components: docs
    Affects Versions: trunk
            Reporter: Robert Kanter
            Assignee: Robert Kanter
            Priority: Minor
             Fix For: trunk


If a user tries to use a Java action, so they've written their own Java main method, on a Kerberos-enabled cluster it will fail because they need to propagate the delegation token like this (taken from the MapReduce action):
{code}
// propagate delegation related props from launcher job to MR job
if (System.getenv("HADOOP_TOKEN_FILE_LOCATION") != null) {
    jobConf.set("mapreduce.job.credentials.binary", System.getenv("HADOOP_TOKEN_FILE_LOCATION"));
}
{code}

We should document this somewhere.  

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