Weiwei Yang commented on YARN-7875:

Hi [~bibinchundatt]

In {{FileSystemNodeLabelsStore}} and {{FileSystemNodeAttributeStore}}, can we 

* close()
* initSchema()
* recover()
* setNodeLabelsManager() --> rename to setNodeDescriptorManager

to {{FileSystemDescriptorStore}} ?

Can you add some java doc to 
{{writeToMirrorFileStream}} and {{loadManagerFromMirror}} since they are the 
major functions that requires each impl to override.


> AttributeStore for store and recover attributes
> -----------------------------------------------
>                 Key: YARN-7875
>                 URL: https://issues.apache.org/jira/browse/YARN-7875
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bibin A Chundatt
>            Assignee: Bibin A Chundatt
>            Priority: Major
>         Attachments: YARN-7875-WIP.patch, YARN-7875-WIP.patch
> Similar to NodeLabelStore need to support NodeAttributeStore for persisting 
> attributes mapping to Nodes.

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