[SPARK-54640][PYTHON] Replace select.select with select.poll on UNIX #53388
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HyukjinKwon
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Dec 8, 2025
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Merged to master. |
xu20160924
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Dec 9, 2025
### What changes were proposed in this pull request? Use `select.poll` to replace `select.select` in `worker.py` on UNIX systems. ### Why are the changes needed? `select.select` has a known issue that it won't work with fd > 1024. We can reach this limit on heavy load systems. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? `test_udf` passes locally, the rest will run on CI. ### Was this patch authored or co-authored using generative AI tooling? No Closes apache#53388 from gaogaotiantian/replace-select-with-poll. Authored-by: Tian Gao <[email protected]> Signed-off-by: Hyukjin Kwon <[email protected]>
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I think this only partially fixes the issue as similar can occur in This was addressed in: #53306 |
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What changes were proposed in this pull request?
Use
select.pollto replaceselect.selectinworker.pyon UNIX systems.Why are the changes needed?
select.selecthas a known issue that it won't work with fd > 1024. We can reach this limit on heavy load systems.Does this PR introduce any user-facing change?
No
How was this patch tested?
test_udfpasses locally, the rest will run on CI.Was this patch authored or co-authored using generative AI tooling?
No