25.8.15 Backport of #88090: Optimize ReplacingMergeTree is_deleted FINAL queries by adding a filter expression transform

[zvonand]

Changelog category (leave one):

• Performance Improvement

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

SELECT query with FINAL clause on a ReplacingMergeTree table with the is_deleted column now executes faster because of improved parallelization from 2 existing optimizations (ClickHouse#88090 by @shankar-iyer)

CI/CD Options

Exclude tests:

• Fast test
• Integration Tests
• Stateless tests
• Stateful tests
• Performance tests
• All with ASAN
• All with TSAN
• All with MSAN
• All with UBSAN
• All with Coverage
• All with Aarch64
• All Regression
• Disable CI Cache

Regression jobs to run:

• Fast suites (mostly <1h)
• Aggregate Functions (2h)
• Alter (1.5h)
• Benchmark (30m)
• ClickHouse Keeper (1h)
• Iceberg (2h)
• LDAP (1h)
• Parquet (1.5h)
• RBAC (1.5h)
• SSL Server (1h)
• S3 (2h)
• Tiered Storage (2h)

[github-actions]

Workflow [PR], commit [7e5f3c5]

[zvonand]

S3 fails: Altinity/clickhouse-regression#93

Aggregate fails: uniqTheta was updated in upstream, not related, test will be updated separately by QA team

Stateless unrelated

[DimensionWieldr]

CI Failure Analysis

1. DCO Check

Failure: Commits lack Signed-off-by: lines

Verdict: Missing sign-off lines are not problems with the PR.

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2. Regression Tests (aggregate_functions_1, S3 suites) - Pre-existing Failures

Failures: /aggregate functions/part 1/uniqTheta, /s3/*/part 2/zero copy replication/*

Evidence these are pre-existing on base branch (releases/25.8.15) MasterCI #21579463803:

• AggregateFunctions (1) = failure
• S3 (aws_s3, 2) = failure
• S3 (azure, 2) = failure
• S3 (minio, 2) = failure

Verdict: Pre-existing failures on base branch. Unrelated to PR changes.

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3. Infrastructure Timeouts - CI Runner Issues

Failures: 7 jobs failed with ~10m1s runtime and empty failed steps (BuzzHouse amd_tsan, Integration tests amd_tsan 3/6, Stateless tests amd_msan/tsan, Stress test amd_ubsan)

Root cause: Jobs timed out at infrastructure level before tests could execute.

Verdict: CI infrastructure timeouts. Unrelated to PR changes.

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4. Stateless tests (amd_asan, flaky check) - Infrastructure

Failure: failure: Start ClickHouse Server

Verdict: CI infrastructure issue during server initialization. Unrelated to PR changes.

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5. New Fails Identified by CI

Test	Job	Analysis
03174_exact_rows_before_aggregation	arm_binary, sequential	Test does not use SELECT ... FINAL. PR only modifies spreadMarkRangesAmongStreamsFinal(). Zero code path overlap.
03100_lwu_09_different_structure	amd_tsan, s3 storage, parallel	Test uses OPTIMIZE TABLE FINAL (storage merge). PR modifies SELECT ... FINAL (query execution). Different code paths.

Additional evidence for 03174:

• Base branch MasterCI #21579463803: arm_binary, sequential passes
• PR 25.8.15 Backport of #88090: Optimize ReplacingMergeTree is_deleted FINAL queries by adding a filter expression transform #1332: Same job fails (flaky)

Verdict: Both tests cannot be affected by this PR - verified via code path analysis.

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Summary

Test Category	Failure Type	Related to PR?
DCO	Missing sign-off	No
Regression (8 jobs)	Pre-existing failures	No
Infrastructure (7 jobs)	Job timeouts	No
Flaky check	Server startup	No
03174_exact_rows_before_aggregation	Flaky (no code path overlap)	No
03100_lwu_09_different_structure	Flaky (different code path)	No

Verdict: All failures are unrelated to the PR changes.