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https://issues.apache.org/jira/browse/HDDS-5332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-5332:
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Labels: pull-request-available (was: )
> Add a new column family and a service provider in Recon DB for Namespace
> Summaries
> ----------------------------------------------------------------------------------
>
> Key: HDDS-5332
> URL: https://issues.apache.org/jira/browse/HDDS-5332
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Siyao Meng
> Assignee: Yuan Gu
> Priority: Major
> Labels: pull-request-available
>
> Table schema:
> {code:java}
> objectId --> class NSSummary
> {code}
> New class NSSummary should at least include these fields:
> 1. Total number of files *directly*[1] under this directory,
> 2. Total size of files directly under this directory,
> 3. File Size Buckets of files directly under this directory.
> Note: [1] *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. This is for
> reducing potential write-amplification for now. The stats could be extended
> into arbitrary layers deep later.
> [06/21] Renamed ReconContainerDBProvider to ReconDBProvider
> [06/21] Expanded the scope of this issue by designing a service provider
> interface for namespace summary, which wraps up all operations on the new
> schema.
>
> [06/23] Merge with HDDS-5379
> Because we are intending to add a new CF to the Recon container DB, the
> existing ContainerDBServiceProvider must be refactored to resolve conflict
> with a new service provider sharing the same RDB as the current one directly
> operates on the DB not just the CF/tables.
> # Refactor ContainerDBServiceProvider into something not directly related to
> the underlying RDB
> # Use a new ReconDBStore instead of containerDbStore in
> ContainerDBServiceProviderImpl
> # Rename ContainerDBServiceProvider/ContainerDBServiceProviderImpl into sth
> more appropriate
> # Combined ReconRocksDB and ReconDBProvider into one class, which manages
> all db-level operations. (Retained ReconRocksDB, deleted ReconDBProvider,
> fixed injection dependency in ReconControllerModule)
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