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https://issues.apache.org/jira/browse/HDDS-9535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mohammad Arafat Khan updated HDDS-9535:
---------------------------------------
Description:
Following a discussion in one of the
[PRs|https://github.com/apache/ozone/pull/4245#issuecomment-1430505298] that
introduced OBS support for namespace summaries, we have decided to address this
improvement separately. It necessitates further discussion and an entirely
different design approach.
The Key-Table Entry example provided below contains both Object-Based Storage
(OBS) and Legacy Buckets with FileSystem disabled. Each entry represents a
unique object in the storage :-
{code:java}
vol1/bucket1/instance1/application1/file1
vol1/bucket1/instance1/application1/file2
vol1/bucket1/instance1/application2/file3
vol1/bucket1/instance1/application2/file4
vol1/bucket1/instance2/application3/file1
vol1/bucket1/instance2/application3/file2
vol1/bucket1/instance2/application4/file3
vol1/bucket1/instance2/application4/file4
{code}
* In this example, '{*}instance1/application1{*}' and
'{*}instance2/application3{*}' are not actual directories but rather prefixes
that help distinguish files from one another in Object Store buckets. Since
Object Store buckets do not have directories, we use prefixes as a way to
simulate directory-like structures, allowing for more refined searches and
easier organization of objects within the bucket. This is similar to how files
are differentiated in a traditional file system using their directories.
* For example, if you want to search for a specific file within an Object
Store bucket, you can use these prefixes to narrow down the search, rather than
listing all objects in the bucket. This approach provides a more efficient way
to locate and manage objects in an Object Store, while still maintaining
compatibility with applications that expect directory-like structures.
> Enable prefix-based filtering for Object Store Layout keys in namespace
> summaries.
> ----------------------------------------------------------------------------------
>
> Key: HDDS-9535
> URL: https://issues.apache.org/jira/browse/HDDS-9535
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: Ozone Recon
> Reporter: Mohammad Arafat Khan
> Assignee: Mohammad Arafat Khan
> Priority: Major
>
> Following a discussion in one of the
> [PRs|https://github.com/apache/ozone/pull/4245#issuecomment-1430505298] that
> introduced OBS support for namespace summaries, we have decided to address
> this improvement separately. It necessitates further discussion and an
> entirely different design approach.
> The Key-Table Entry example provided below contains both Object-Based Storage
> (OBS) and Legacy Buckets with FileSystem disabled. Each entry represents a
> unique object in the storage :-
>
> {code:java}
> vol1/bucket1/instance1/application1/file1
> vol1/bucket1/instance1/application1/file2
> vol1/bucket1/instance1/application2/file3
> vol1/bucket1/instance1/application2/file4
> vol1/bucket1/instance2/application3/file1
> vol1/bucket1/instance2/application3/file2
> vol1/bucket1/instance2/application4/file3
> vol1/bucket1/instance2/application4/file4
> {code}
> * In this example, '{*}instance1/application1{*}' and
> '{*}instance2/application3{*}' are not actual directories but rather prefixes
> that help distinguish files from one another in Object Store buckets. Since
> Object Store buckets do not have directories, we use prefixes as a way to
> simulate directory-like structures, allowing for more refined searches and
> easier organization of objects within the bucket. This is similar to how
> files are differentiated in a traditional file system using their directories.
> * For example, if you want to search for a specific file within an Object
> Store bucket, you can use these prefixes to narrow down the search, rather
> than listing all objects in the bucket. This approach provides a more
> efficient way to locate and manage objects in an Object Store, while still
> maintaining compatibility with applications that expect directory-like
> structures.
>
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