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https://issues.apache.org/jira/browse/HDDS-15925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-15925:
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Labels: pull-request-available (was: )
> OFS getFileStatus: client-side bucket layout cache to skip redundant
> InfoBucket RPC
> -----------------------------------------------------------------------------------
>
> Key: HDDS-15925
> URL: https://issues.apache.org/jira/browse/HDDS-15925
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Major
> Labels: pull-request-available
>
> h2. Motivation
> Rooted OFS {{getFileStatus}} currently performs a separate {{getBucketInfo}}
> (InfoBucket) RPC before calling OM {{GetFileStatus}} for most key paths. This
> doubles client→OM traffic for workloads that call {{getFileStatus}}
> frequently (for example Hive stats autogather on {{ofs://}}).
> h2. Approach (client-side)
> * Cache successful bucket layout validation per {{(volume, bucket)}} in
> {{BasicRootedOzoneClientAdapterImpl}}.
> * First {{getFileStatus}} on a bucket may still fetch bucket details to
> validate layout (including link-bucket resolution and OBJECT_STORE rejection).
> * After cache warm-up, call {{proxy.getOzoneFileStatus(..., headOp)}}
> directly without {{getBucket()}} on steady-state paths.
> * Preserve snapshot indicator paths, link-bucket layout validation,
> OBJECT_STORE layout rejection, and {{headOp}} propagation.
> h2. Relationship to HDDS-11232
> This is *not* the HDDS-11232 approach (no combined OM response / server-side
> merge of bucket info with file status). It is a separate *client-side*
> optimization for the same RPC-reduction theme. It does not close HDDS-11232.
> h2. Pull request
> https://github.com/apache/ozone/pull/10792
> h2. Testing
> * Integration: {{testGetFileStatusUsesSingleOmRpcAfterCacheWarm}} and related
> layout/error cases in {{AbstractRootedOzoneFileSystemTest}}
> * Unit: {{TestBasicRootedOzoneClientAdapterHeadOp}} updated for direct
> {{getOzoneFileStatus}} path
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