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From "Elek, Marton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDDS-793) Support custom key/value annotations on volume/bucket/key
Date Fri, 02 Nov 2018 10:23:00 GMT
Elek, Marton created HDDS-793:
---------------------------------

             Summary: Support custom key/value annotations on volume/bucket/key
                 Key: HDDS-793
                 URL: https://issues.apache.org/jira/browse/HDDS-793
             Project: Hadoop Distributed Data Store
          Issue Type: New Feature
          Components: OM
            Reporter: Elek, Marton
            Assignee: Elek, Marton


I propose to add a custom Map<String,String> annotation field to objects/buckets and
keys in Ozone Manager.

It would enable to build any extended functionality on top of the OM's generic interface.
For example:

 * Support tags in Ozone S3 gateway (https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGETtagging.html)
 * Support md5 based ETags in s3g
 * Store s3 related authorization data (ACLs, policies) together with the parent objects

As an optional feature (could be implemented later) the client can defined the exposed annotations.
For example s3g can defined which annotations should be read from rocksdb on OM side and sent
the the client (s3g)



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