[test](fe) Remove flaky DistributeHintTest.testLeading#65802
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run buildall |
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Request changes: this patch narrowly removes an expensive, unseeded, muted randomized test, but it also removes the remaining executable signal for a known unresolved leading-hint semi/anti correctness failure without adding a deterministic replacement. See the inline finding for the concrete invalid plan and a small replacement-test direction.
Critical checkpoint conclusions:
- Goal and proof: the deletion achieves the stated stability/runtime goal, but the two reported targeted FE-UT rounds now execute only
testHintJoinwithwithLeading=false; they do not prove the failing leading path is covered. - Scope and clarity: the source change is minimal and focused. The dormant leading helper branch is not a separate defect and can be reused for the focused replacement.
- Correctness and parallel paths: current
LeadingHint.getJoinConstraintcan still match a semi constraint before the retained side exists, build a right-semi child that drops a later-referenced slot, and produce an invalid join tree. The broad regression suites do not directly assert this constraint-level rejection; the exact focused tests added in #65205 were reverted with #65546. - Concurrency, lifecycle/static initialization, configuration/dynamic behavior, compatibility/rolling upgrade, persistence/transactions/data writes, FE-BE variable passing, and observability: not involved in this FE test-only deletion.
- Test coverage/results: existing Groovy suites and generated
.outbaselines were inspected; they cover many leading shapes/results but not the reverted direct invariant. Per the review-run contract, no build or test was run locally.git diff --checkis clean; the author reports two successful targeted FE-UT runs. - Performance: removing roughly 51,000 unseeded optimization attempts is worthwhile, and a small direct deterministic unit test preserves the important signal without restoring that cost.
- User focus: no additional user-provided focus was supplied.
Review completion: the full changed-file sweep, main risk scan, complete-review and risk-focused subagent passes, candidate deduplication, and unresolved-point audit are complete. One blocking inline issue remains.
| for (int e = t - 1; e <= (t * (t - 1)) / 2; e++) { | ||
| for (int i = 0; i < 10; i++) { | ||
| System.out.println("TableNumber: " + String.valueOf(t) + " EdgeNumber: " + e + " Iteration: " + i); | ||
| randomTest(t, e, false, true); |
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[P1] Preserve a deterministic guard for the known semi-join failure
Please replace this randomized entry with a small deterministic guard before deleting it. The reported missing map entry is a concrete production-invalid rewrite, not only evaluator noise. For an original A LEFT SEMI JOIN B ON A.k = B.k, an extra C, and leading(B C A), current LeadingHint.getJoinConstraint can produce:
Join(A.k = B.k) // B.k is absent from both children
RightSemiJoin
Scan(B)
Scan(C) // right-semi output is C only
Scan(A)
The guard at LeadingHint.java:420-422 tests isSubset(...) && !isSubset(...) on the same arguments, so it never rejects getJoinConstraint(B|C, B, C); the child keeps bitmap B|C after dropping B, and the saved predicate is attached above it. #65205 added the exact withoutRetainedSide assertion after this muted test exposed the issue, and #65546 reverted that fix plus its focused tests while a correct fix remained outstanding. The cited FE-UT validation now only runs withLeading=false, while the broad result suites do not directly assert this constraint rejection. A tiny direct LeadingHintTest covering early left/right semi/anti matches would preserve the important signal without the ~51,000 unseeded attempts.
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TPC-H: Total hot run time: 29657 ms |
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TPC-DS: Total hot run time: 178715 ms |
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ClickBench: Total hot run time: 25.4 s |
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What problem does this PR solve?
Issue Number: N/A
Related PR: #65205, #65546
Problem Summary:
org.apache.doris.nereids.jobs.joinorder.joinhint.DistributeHintTest.testLeadingis a muted, unseeded randomized FE UT. TeamCity build 1000223 recorded the test asFAILUREwhile the parent build remainedSUCCESS; the random optimized plan reached the test-sideHyperGraphBuilderOldevaluator with a missing map entry and threw aNullPointerExceptionbefore the equality oracle could complete.The failure is not caused by the triggering PR #65784, whose changes are limited to Iceberg, Parquet, table-reader, and external-catalog paths. A bounded history snapshot also found muted failures across independent master and release-branch PR builds.
This PR removes only the
testLeadingJUnit entry. It leavestestHintJoinand the shared helper code unchanged. Deterministic leading-hint behavior remains covered by thequery_p0/hint/fix_leading.groovy,multi_leading.groovy, andtest_hint.groovyregression suites.User/developer impact: no product behavior changes; FE UT no longer executes this non-reproducible randomized test entry.
Validation:
Both rounds completed with
BUILD SUCCESS, including FE checkstyle and compilation.git diff --checkalso passed.Release note
None
Check List (For Author)
Test
Behavior changed:
Does this need documentation?
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