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From "Todd Lipcon (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-7788) HA: Simple HealthMonitor class to watch an HAService
Date Tue, 13 Mar 2012 00:52:39 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Todd Lipcon updated HADOOP-7788:

    Status: Patch Available  (was: Open)
> HA: Simple HealthMonitor class to watch an HAService
> ----------------------------------------------------
>                 Key: HADOOP-7788
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7788
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: ha
>    Affects Versions: 0.24.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hadoop-7788.txt, hdfs-2524.txt
> This is a utility class which will be part of the FailoverController. The class starts
a daemon thread which periodically monitors an HAService, calling its monitorHealth function.
It then generates callbacks into another class when the health status changes (eg the RPC
fails or the service returns a HealthCheckFailedException)

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