Rakesh Radhakrishnan created HDDS-6402:
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Summary: 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
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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