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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3899) QJM: Writer-side metrics
Date Fri, 07 Sep 2012 03:24:07 GMT
Todd Lipcon created HDFS-3899:

             Summary: QJM: Writer-side metrics
                 Key: HDFS-3899
                 URL: https://issues.apache.org/jira/browse/HDFS-3899
             Project: Hadoop HDFS
          Issue Type: Sub-task
    Affects Versions: QuorumJournalManager (HDFS-3077)
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon

We already have some metrics on the server side (JournalNode) but it's useful to also gather
metrics from the client side (NameNode). This is important in order to monitor that the client
is seeing good performance from the individual JNs, and so that administrators can set up
alerts if any of the JNs has become inaccessible to the NN.

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