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From "Elek, Marton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-15302) Enable DataNode/NameNode service plugins with Service Provider interface
Date Fri, 09 Mar 2018 15:44:00 GMT
Elek, Marton created HADOOP-15302:
-------------------------------------

             Summary: Enable DataNode/NameNode service plugins with Service Provider interface
                 Key: HADOOP-15302
                 URL: https://issues.apache.org/jira/browse/HADOOP-15302
             Project: Hadoop Common
          Issue Type: Improvement
            Reporter: Elek, Marton
            Assignee: Elek, Marton


HADOOP-5257 introduced ServicePlugin capabilities for NameNode/DataNode. As of now they could
be activated by configuration values. 

I propose to activate plugins with Service Provider Interface. In case of a special service
file is added a jar it would be enough to add the plugin to the classpath. It would help to
add optional components to NameNode/DataNode with settings the classpath.

This is the same api which could be used in java 9 to consume defined services.



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