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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7580) NN -> JN communication should use reusable authentication methods
Date Fri, 02 Jan 2015 05:48:13 GMT
Harsh J created HDFS-7580:
-----------------------------

             Summary: NN -> JN communication should use reusable authentication methods
                 Key: HDFS-7580
                 URL: https://issues.apache.org/jira/browse/HDFS-7580
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: journal-node, namenode
    Affects Versions: 2.5.0
            Reporter: Harsh J


It appears that NNs talk to JNs via general SaslRPC in secure mode, causing all requests to
be carried out with a kerberos authentication. This can cause delays and occasionally NN failures
if the KDC used does not respond in its default timeout period (30s, whereas the QJM writes
come with default of 20s).



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