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From "Todd Lipcon (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3245) Add metrics and web UI for cluster version summary
Date Tue, 10 Apr 2012 18:55:13 GMT
Add metrics and web UI for cluster version summary
--------------------------------------------------

                 Key: HDFS-3245
                 URL: https://issues.apache.org/jira/browse/HDFS-3245
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
    Affects Versions: 2.0.0
            Reporter: Todd Lipcon


With the introduction of protocol compatibility, once HDFS-2983 is committed, we have the
possibility that different nodes in a cluster are running different software versions. To
aid operators, we should add the ability to summarize the status of versions in the cluster,
so they can easily determine whether a rolling upgrade is in progress or if some nodes "missed"
an upgrade (eg maybe they were out of service when the software was updated)

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