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https://issues.apache.org/jira/browse/YARN-1399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13837020#comment-13837020
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Zhijie Shen commented on YARN-1399:
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bq. What is the concern for a tag being a valid unicode string? If queried via
rest API the values would be urlencoded, thus no harm.
For example, do we want to support the multiple words in a tag, such as
"distributed systems"? It doesn't have the problem when we do exact match for
searching via tags? However, if we want somewhat fuzzy match, we may need to
take care of splitting word.
For user/queue/applicationType, we may want to them be lowercase/uppercase (or
be converted to lowercase/uppercase), thus being insensitive.
Also, it's good to ignore some characters, such as "?!/<={}" and etc. Thoughts?
> Allow users to annotate an application with multiple tags
> ---------------------------------------------------------
>
> Key: YARN-1399
> URL: https://issues.apache.org/jira/browse/YARN-1399
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Zhijie Shen
> Assignee: Zhijie Shen
>
> Nowadays, when submitting an application, users can fill the applicationType
> field to facilitate searching it later. IMHO, it's good to accept multiple
> tags to allow users to describe their applications in multiple aspects,
> including the application type. Then, searching by tags may be more efficient
> for users to reach their desired application collection. It's pretty much
> like the tag system of online photo/video/music and etc.
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