Fix nightly test failures (2026-01-16) #9134
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Fix timing-sensitive bgw_job_stat_history_errors test The test was failing on macOS because jobs completed too quickly (0.1s sleep) to reliably trigger background worker limit exceeded errors. Increased job sleep duration from 0.1s to 1s to ensure concurrent execution exceeds the max_worker_processes limit of 24 when launching 26 jobs, making the test deterministic across different system speeds. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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Stabilize the compress_sort_transform test by disabling seqscan for the final join query. The flakiness was caused by PostgreSQL's cost-based optimizer choosing between Seq Scan and Index Scan for the uncompressed chunk data - with only ~720 rows matching the filter, the cost difference is minimal and can vary based on statistics. Using enable_seqscan=false is the appropriate fix because: 1. This test verifies sort transform optimization, not planner costs 2. This pattern is used in 12+ other tests in the suite 3. It ensures deterministic behavior across all PostgreSQL versions 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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Poroma-Banerjee
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Once PR #9139 is merged, Claude should be able to fix up this PR based on our review feedback. |
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Summary
This PR was automatically generated by Claude Code to fix failing nightly CI tests.
Each test fix is in a separate commit with its own description.
Original Failure
Commits (2 fixes)
Fix compress_sort_transform test for PostgreSQL 18.0 PostgreSQL 18.0's query planner made a different cost-based decision for the final join query in the test, choosing Sequential Scan over Index Only Scan Backward for accessing uncompressed chunk data. This is a legitimate planner behavior change, not a bug. Created a PG18-specific expected output file to accommodate this difference.
🤖 Generated with Claude Code
Co-Authored-By: Claude noreply@anthropic.com
Fix timing-sensitive bgw_job_stat_history_errors test The test was failing on macOS because jobs completed too quickly (0.1s sleep) to reliably trigger background worker limit exceeded errors. Increased job sleep duration from 0.1s to 1s to ensure concurrent execution exceeds the max_worker_processes limit of 24 when launching 26 jobs, making the test deterministic across different system speeds.
🤖 Generated with Claude Code
Co-Authored-By: Claude noreply@anthropic.com
Testing
Please review each commit and ensure the fixes are appropriate before merging.
The CI will run the full test suite to verify the fixes.
🤖 Generated with Claude Code