Harsh J created HDFS-7580:
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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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