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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13448) S3Guard: Define MetadataStore interface.
Date Thu, 08 Sep 2016 21:14:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Nauroth updated HADOOP-13448:
-----------------------------------
    Attachment: HADOOP-13448-HADOOP-13345.003.patch

I'm attaching patch revision 003.  Here is a summary of the changes since last time:

* Removed the type bounds that would have been dropped due to instantiation through {{ReflectionUtils#newInstance}}.
* Converted {{MetadataStore}} to an interface instead of an abstract base class.
* Added the methods we discussed to {{DirListingMetadata}}.
* Added {{PathMetadata#toString}}.
* Used {{ConcurrentHashMap}} inside {{DirListingMetadata}} for thread safety.
* Added more pre-condition checks to address a TODO.
* Added a unit test suite to address another TODO.
* Fixed a JavaDoc failure.
* Cleanup for Checkstyle.


> S3Guard: Define MetadataStore interface.
> ----------------------------------------
>
>                 Key: HADOOP-13448
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13448
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: HADOOP-13448-HADOOP-13345.001.patch, HADOOP-13448-HADOOP-13345.002.patch,
HADOOP-13448-HADOOP-13345.003.patch
>
>
> Define the common interface for metadata store operations.  This is the interface that
any metadata back-end must implement in order to integrate with S3Guard.



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