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https://issues.apache.org/jira/browse/YARN-1399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13837031#comment-13837031
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Alejandro Abdelnur commented on YARN-1399:
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I would stick to exact tag match. Case insensitive seems reasonable, though I
would implement it by lowercase or upper case tags on arrival and when
querying. Then the matching is the cheapest.
Regarding symbols, what is the harm in supporting them?
One thing we didn't mentioned before, on querying I would support only OR, then
the client must do any further filtering if it wants to do AND.
> 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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