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https://issues.apache.org/jira/browse/HADOOP-15007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16347064#comment-16347064
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Elek, Marton commented on HADOOP-15007:
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As the tags are used only to classify configuration for end user and no strict
programmatic meaning, I propose the following simplification:
* I think the PropertyTag enum could be removed (with all of the children)
* I would use just simple strings as tags
* We will loose type safety, but it's not a big deal as the tags are not used
in the code. We don't need constants.
* With simple string based tags we don't need to care about the dependency and
compatibility problems. They would be solved.
* To avoid typo bugs: I would extend the TestConfigurationFieldsBase to check
the available tags and throw an error if a tag is used less than 3 times.
> Stabilize and document Configuration <tag> element
> --------------------------------------------------
>
> Key: HADOOP-15007
> URL: https://issues.apache.org/jira/browse/HADOOP-15007
> Project: Hadoop Common
> Issue Type: Improvement
> Components: conf
> Affects Versions: 3.1.0
> Reporter: Steve Loughran
> Assignee: Anu Engineer
> Priority: Blocker
>
> HDFS-12350 (moved to HADOOP-15005). Adds the ability to tag properties with a
> <tag> value.
> We need to make sure that this feature is backwards compatible & usable in
> production. That's docs, testing, marshalling etc.
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