Gabriel39 opened a new pull request, #69721:
URL: https://github.com/apache/doris/pull/69721
### What problem does this PR solve?
`external_table_p0/paimon/test_paimon_rust_reader_eq_for_null.groovy` can
fail under session-variable fuzzing even when the Rust runtime-filter converter
works correctly. The suite forces IN runtime filters and waits for their
arrival, but it does not set an IN-filter capacity until the later
oversized-filter section.
When fuzzing sets `runtime_filter_max_in_num=0`, the positive integer join
builds a filter with two values. The filter is disabled with `reach max in
num`, and `RustRuntimeFiltersApplied` remains zero, failing the assertion that
the positive control reaches Rust. Waiting longer cannot activate a filter that
was disabled by its capacity limit.
Set a sufficient capacity and disable selectivity-based runtime-filter
pruning before the reader/profile checks. Keep the separate 70000-value
capacity for the oversized-filter boundary tests and use the existing `finally`
block to restore both inherited settings. The positive, residual,
reader-routing, and oversized-filter assertions remain intact.
### Release note
None. Regression test configuration only.
### Check List (For Author)
- Test
- [x] Regression test
- Behavior changed:
- [x] No. No production behavior changes.
- Does this need documentation?
- [x] No.
### Validation
- Reproduced the original full-suite failure with inherited
`runtime_filter_max_in_num=0` and `enable_runtime_filter_prune=true`; the
profile reports `DISABLED / reach max in num` and zero applied Rust runtime
filters.
- Ran the complete fixed suite through `run-regression-test.sh` on a local
Doris + Spark/Paimon + MinIO fixture with the same inherited settings: one
suite passed, no failures or skips.
- Verified that the positive integer filter is applied by Rust and that both
inherited settings are restored after the suite. Oversized-filter boundary
assertions also pass.
- Groovy compilation and `git diff --check` passed.
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label
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