[jira] [Created] (HDDS-5332) Add a new DB to be used with Namespace Summaries

["Siyao Meng (Jira)" <ji...@apache.org>]

Siyao Meng created HDDS-5332:
--------------------------------

             Summary: Add a new DB to be used with Namespace Summaries
                 Key: HDDS-5332
                 URL: https://issues.apache.org/jira/browse/HDDS-5332
             Project: Apache Ozone
          Issue Type: Sub-task
            Reporter: Siyao Meng


Need a new DBProvider for this.

Table schema:

{code}
objectId --> class NSSummary
{code}

New class NSSummary:

Total number of files *directly* under this directory,
Total size of files directly under this directory,
File Size Buckets of files directly under this directory.

Note: *directly* means not counting files under any subdirectories, for now. We could further optimize the speed later by trading more writes (propagating the statistics any layers deep upwards) with speed.



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