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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13449) S3Guard: Implement DynamoDBMetadataStore.
Date Mon, 24 Oct 2016 18:06:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15602745#comment-15602745
] 

Lei (Eddy) Xu commented on HADOOP-13449:
----------------------------------------

bq. . I'm wondering whether we should also save access time, owner, group, permission, size
etc in the metadata,

Yes, in theory, we can save them. However, for S3AFileStatus, these fields are not set, while
the tests are not test the special cases of S3AFIleStatus (i.e., whether {{isEmptyDirectory()
== true && DirMetadata.isEmpty()}} ).   IMO, we should modify the tests for these
invariants. 


I am working on reviewing the rest of the patch. Will post a review soon. Thanks for the good
work.




> 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-13345.000.patch
>
>
> Provide an implementation of the metadata store backed by DynamoDB.



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