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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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Siyao Meng updated HDDS-5332:
-----------------------------
Description:
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.
was:
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.
[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.
> 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
>
> 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.
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