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https://issues.apache.org/jira/browse/HADOOP-13449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15593268#comment-15593268
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Aaron Fabbri commented on HADOOP-13449:
---------------------------------------

Chatted with a friend about this some and we both are leaning towards requiring 
callers of MetadataStore and DirListingMetadata to pass in fully-qualified 
paths (with scheme+bucket).  Considering that DirListingMetadata is , 
conceptually, a sort of simple POJO that folks will serialize/deserialize, it 
makes sense to have it consume complete paths instead of "calling back" to the 
FS client for clarification on what it means.

Hope this discussion helps with your efforts on this JIRA [~eddyxu] and 
[~liuml07].  Let me know if you disagree at all..

> S3Guard: Implement DynamoDBMetadataStore.
> -----------------------------------------
>
>                 Key: HADOOP-13449
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13449
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Chris Nauroth
>            Assignee: Mingliang Liu
>         Attachments: HADOOP-13449-HADOOP-13345.wip.patch
>
>
> Provide an implementation of the metadata store backed by DynamoDB.



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