ss77892 opened a new pull request, #11159: URL: https://github.com/apache/ozone/pull/11159
## What changes were proposed in this pull request? StreamBlockInputStream: refill the pre-read window in bulk instead of once per response This change adds an early return in readBlock(): when the caller's read is already covered by what has been requested (required <= 0) and the outstanding pre-read window is still at least half full, no new request is sent. The window is refilled in bulk only once it drains below half. When required > 0 the request is always sent, so a read that needs bytes beyond the requested range is never starved. A unit test (testPreReadWindowIsRefilledInBulk) reads a block one response at a time, as KeyInputStream does, and checks that the number of ReadBlock requests is bounded by the number of half windows and that every request carries at least half a window. ## What is the link to the Apache JIRA https://issues.apache.org/jira/browse/HDDS-16323 ## How was this patch tested? UT added/ CI Performance evaluation on 3 node cluster. [HDDS-16323.pdf](https://github.com/user-attachments/files/31604182/HDDS-16323.pdf) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
