[GitHub] SongYadong opened a new pull request #23869: [SPARK-26967][CORE] Put MetricsSystem instance names together for clearer management

[GitBox <gi...@apache.org>]

SongYadong opened a new pull request #23869: [SPARK-26967][CORE] Put MetricsSystem instance names together for clearer management
URL: https://github.com/apache/spark/pull/23869
 
 
   ## What changes were proposed in this pull request?
   
   `MetricsSystem` instance creations have a scattered distribution in the project code. So do their names. It may cause some inconvenience for browsing and management. 
   This PR tries to put them together. In this way, we can have a uniform location for adding or removing them, and have a overall view of `MetircsSystem `instances in current project.
   It's also helpful for maintaining user documents by avoiding missing something.
   
   ## How was this patch tested?
   
   Existing unit tests.
   

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