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From "Justin Joseph (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2354) Generalize the HAServiceProtocol interface
Date Wed, 21 Sep 2011 14:37:09 GMT
Generalize the HAServiceProtocol interface
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                 Key: HDFS-2354
                 URL: https://issues.apache.org/jira/browse/HDFS-2354
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: name-node
            Reporter: Justin Joseph
            Assignee: Justin Joseph


This JIRA intends to revisit the patches committed for HADOOP-7455 and HDFS-1974 & to
provide more generic interfaces which allows alternative HA implementations to co-exist complying
with HAServiceProtocol.

Some of the considerations are
1) Support life cycle methods (start*() and stop() APIs) in HAServiceProtocol
2) Support custom states in HAServiceProtocol
3) As per the patch submitted for HDFS-1974, Namenode implements HAService interface. This
needs to be reconsidered.

I will elaborate on these points, in the form of comments below.

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