[jira] [Created] (SPARK-14151) Propose to expose Metrics Sink and Source interface

["Saisai Shao (JIRA)" <ji...@apache.org>]

Saisai Shao created SPARK-14151:
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             Summary: Propose to expose Metrics Sink and Source interface
                 Key: SPARK-14151
                 URL: https://issues.apache.org/jira/browse/SPARK-14151
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
            Reporter: Saisai Shao
            Priority: Minor


MetricsSystem is designed for plug-in different sources and sinks, user could write their own sources and sinks and configured through metrics.properties, MetricsSystem will register it through reflection. But current Source and Sink interface is private, which means user cannot create their own sources and sinks unless using the same package.

So here propose to expose source and sink interface, this will let user build and maintain their own source and sink, alleviate the maintenance overhead of spark codebase. 



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