Make 03532_window_function_and_null_source_max_threads not flaky

[yariks5s]

Changelog category (leave one):

• CI Fix or Improvement (changelog entry is not required)

Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):

Fixes flaky 03532_window_function_and_null_source_max_threads. Was failing because of randomized settings. https://s3.amazonaws.com/clickhouse-test-reports/json.html?PR=109294&sha=8ff33165d8f5565caf0757b07e8955a91728045c&name_0=PR

Version info

• Merged into: 26.7.1.561 (included in 26.7 and later)

[clickhouse-gh]

Workflow [PR], commit [d2ed3bd]

Summary: ✅

---

AI Review

Summary

This PR hard-pins the planner inputs for 03532_window_function_and_null_source_max_threads so the test stays on the parallel_hash execution path that its reference already assumes, instead of drifting onto a single-threaded join shape under randomized CI settings. I did not find a correctness, coverage, or PR-metadata issue in the current diff.

Final Verdict

✅ No findings.

[clickhouse-gh]

LLVM Coverage Report

Metric	Baseline	Current	Δ
Lines	85.93%	85.95%	+0.02%
Functions	91.47%	91.48%	+0.00%
Branches	78.43%	78.48%	+0.04%

Changed lines: No C/C++ source files changed — skipping uncovered code analysis.

Newly covered by added/modified tests: 161 line(s), 31 function(s) across 56 file(s) · Details

Top files

• src/Functions/FunctionShowCertificate.cpp: 36 line(s), 2 function(s)
• src/AggregateFunctions/AggregateFunctionTopK.cpp: 9 line(s), 2 function(s)
• src/Storages/StorageReplicatedMergeTree.cpp: 9 line(s)
• src/Functions/printf.cpp: 6 line(s)
• src/Functions/FunctionsCodingIP.cpp: 5 line(s)

Full report