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https://issues.apache.org/jira/browse/HIVE-16206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15939098#comment-15939098
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Ratandeep Ratti commented on HIVE-16206:
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The changes look good to me [~sbeeram]!
> Make Codahale metrics reporters pluggable
> -----------------------------------------
>
> Key: HIVE-16206
> URL: https://issues.apache.org/jira/browse/HIVE-16206
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Affects Versions: 2.1.2
> Reporter: Sunitha Beeram
> Assignee: Sunitha Beeram
> Attachments: HIVE-16206.2.patch, HIVE-16206.3.patch,
> HIVE-16206.4.patch, HIVE-16206.5.patch, HIVE-16206.6.patch, HIVE-16206.patch
>
>
> Hive metrics code currently allows pluggable metrics handlers - ie, handlers
> that take care of providing interfaces for metrics collection as well as a
> reporting; one of the 'handlers' is CodahaleMetrics. Codahale can work with
> different reporters - currently supported ones are Console, JMX, JSON file
> and hadoop2 sink. However, adding a new reporter involves changing that
> class. We would like to make this conf driven just the way MetricsFactory
> handles configurable Metrics classes.
> Scope of work:
> - Provide a new configuration option, HIVE_CODAHALE_REPORTER_CLASSES that
> enumerates classes (like HIVE_METRICS_CLASS and unlike HIVE_METRICS_REPORTER).
> - Move JsonFileReporter into its own class.
> - Update CodahaleMetrics.java to read new config option and if the new option
> is not present, look for the old option and instantiate accordingly) - ie,
> make the code backward compatible.
> - Update and add new tests.
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