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[CELEBORN-2194] Change default value of celeborn.worker.directMemoryRatioForReadBuffer#3527

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[CELEBORN-2194] Change default value of celeborn.worker.directMemoryRatioForReadBuffer#3527
SteNicholas wants to merge 1 commit intoapache:mainfrom
SteNicholas:CELEBORN-2194

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@SteNicholas SteNicholas commented Nov 4, 2025

What changes were proposed in this pull request?

Change default value of celeborn.worker.directMemoryRatioForReadBuffer from 0.1 to 0.35.

Why are the changes needed?

The default value of celeborn.worker.directMemoryRatioForReadBuffer is 0.1, which is too small to cause a backlog of read buffer requests in ReadBufferDispacther. Therefore, celeborn.worker.directMemoryRatioForReadBuffer should be changed from 0.1 to 0.35 which is production practice value to raise read buffer threshold of ReadBufferDispatcher.

Does this PR resolve a correctness bug?

No.

Does this PR introduce any user-facing change?

The default value of celeborn.worker.directMemoryRatioForReadBuffer is changed to 0.35.

How was this patch tested?

CI.

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Merged to main(v0.7.0).

SteNicholas added a commit that referenced this pull request Nov 4, 2025
…atioForReadBuffer

### What changes were proposed in this pull request?

Change default value of `celeborn.worker.directMemoryRatioForReadBuffer` from 0.1 to 0.35.

### Why are the changes needed?

The default value of `celeborn.worker.directMemoryRatioForReadBuffer` is 0.1, which is too small to cause a backlog of read buffer requests in `ReadBufferDispacther`. Therefore, `celeborn.worker.directMemoryRatioForReadBuffer` should be changed from `0.1` to `0.35` which is production practice value to raise read buffer threshold of `ReadBufferDispatcher`.

### Does this PR resolve a correctness bug?

No.

### Does this PR introduce _any_ user-facing change?

The default value of `celeborn.worker.directMemoryRatioForReadBuffer` is changed to 0.35.

### How was this patch tested?

CI.

Closes #3527 from SteNicholas/CELEBORN-2194.

Authored-by: SteNicholas <programgeek@163.com>
Signed-off-by: SteNicholas <programgeek@163.com>
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