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https://issues.apache.org/jira/browse/HDDS-15734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chung-En Lee updated HDDS-15734:
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Summary: Implementing position read in BlockInputStream (was: Optimize
`readVectored` by implementing `ByteBufferPositionedReadable` in
`BlockInputStream` to reduce lock contention)
> Implementing position read in BlockInputStream
> ----------------------------------------------
>
> Key: HDDS-15734
> URL: https://issues.apache.org/jira/browse/HDDS-15734
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Chung-En Lee
> Assignee: Chung-En Lee
> Priority: Major
>
> Currently, when performing parallel read operations via {{{}readVectored{}}},
> we are experiencing significant lock contention. This bottleneck happens
> because {{BlockInputStream}} and {{ChunkInputStream}} do not implement
> {{{}ByteBufferPositionedReadable{}}}. As a result, concurrent threads end up
> competing for the same underlying stream locks during positioned read
> operations.
> h4. The goal of this ticket is to implement ByteBufferPositionedReadable for
> both BlockInputStream and ChunkInputStream. By enabling thread-safe,
> position-based reads directly into ByteBuffer, we can bypass the
> synchronization overhead and greatly improve the performance of concurrent
> readVectored calls.
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