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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4383) Add standard interface/methods for all services to query IPC and HTTP addresses and ports
Date Thu, 09 Oct 2008 13:34:44 GMT
Add standard interface/methods for all services to query IPC and HTTP addresses and ports
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                 Key: HADOOP-4383
                 URL: https://issues.apache.org/jira/browse/HADOOP-4383
             Project: Hadoop Core
          Issue Type: Improvement
          Components: dfs, mapred
    Affects Versions: 0.20.0
            Reporter: Steve Loughran
            Priority: Minor


This is something I've ended up doing in subclasses of all the services: methods to get at
the IPC and HTTP port and addresses. Some services have exported methods for this (JobTracker),
others package-private member variables (namenode), while others don't allow you to get at
all the data (Datanode keeps the http server private). 

A uniform way to query any service for its live port and address values make some aspects
of service management much easier, such as feeding those values in to http page monitoring
tools.

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