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https://issues.apache.org/jira/browse/HDDS-6402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tanvi Penumudy updated HDDS-6402:
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Attachment: KEY_PATH_LOCK Design Document.pdf
> Introduce hashed key path locks for OBS bucket
> ----------------------------------------------
>
> Key: HDDS-6402
> URL: https://issues.apache.org/jira/browse/HDDS-6402
> Project: Apache Ozone
> Issue Type: New Feature
> Components: Ozone Manager
> Reporter: Rakesh Radhakrishnan
> Assignee: Tanvi Penumudy
> Priority: Major
> Attachments: KEY_PATH_LOCK Design Document.pdf
>
>
> The goal of this task is to allow more concurrent operations(mixture of write
> and read) by replacing the global lock with a {{hash locking mechanism}} on
> key path.
> The performance of Ozone’s metadata write operations is limited by a
> {{{}bucket lock{}}}, which is a *global lock* for key operations. Each
> metadata write operation acquires the global bucket lock and holds it until
> that metadata operation is finished. This prevents concurrent execution of
> write and read operations even if they are fully independent on disjoint key
> paths.
> In this task, we will be considering only the keys stored under
> {{OBJECT_STORE("OBS")}} bucket layout format. In future, the plan is to
> refine bucket locks for FSO bucket layouts as well, where we will need more
> complex hierarchical structure prefix based locking mechanism.
>
> +Note:+ We will post the design doc soon.
>
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