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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4383) Add standard interface/methods for all services to query IPC and HTTP addresses and ports
Date Thu, 13 Nov 2008 10:19:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4383?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12647250#action_12647250
] 

Steve Loughran commented on HADOOP-4383:
----------------------------------------

SmartFrog is currently under LPGL, but anything I push into the apache codebase is relicensed
under the Apache license; I need to do some paperwork for such events. Have a look at the
interface and see if you are happy with the idea, and I will sort things out. 

> Add standard interface/methods for all services to query IPC and HTTP addresses and ports
> -----------------------------------------------------------------------------------------
>
>                 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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