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https://issues.apache.org/jira/browse/YARN-3551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14524144#comment-14524144
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Li Lu commented on YARN-3551:
-----------------------------

It seems like the 3 findbugs warnings were introduced in YARN-3039. I'm not 
sure if the unit tests are irrelevant. [~djp] could you please take a look at 
this, and maybe we can do a quick fix in either YARN-3039, or a separate JIRA? 
Thanks! 

> Consolidate data model change according to the backend implementation
> ---------------------------------------------------------------------
>
>                 Key: YARN-3551
>                 URL: https://issues.apache.org/jira/browse/YARN-3551
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>         Attachments: YARN-3551-YARN-2928.4.patch, YARN-3551.1.patch, 
> YARN-3551.2.patch, YARN-3551.3.patch
>
>
> Based on the comments on 
> [YARN-3134|https://issues.apache.org/jira/browse/YARN-3134?focusedCommentId=14512080&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14512080]
>  and 
> [YARN-3411|https://issues.apache.org/jira/browse/YARN-3411?focusedCommentId=14512098&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14512098],
>  we need to change the data model to restrict the data type of 
> info/config/metric section.
> 1. Info: the value could be all kinds object that is able to be 
> serialized/deserialized by jackson.
> 2. Config: the value will always be assumed as String.
> 3. Metric: single data or time series value have to be number for aggregation.
> Other than that, info/start time/finish time of metric seem not to be 
> necessary for storage. They should be removed.



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