Flaky test: TestMemoryControlWithUpdate in pkg/statistics/handle/cache/internal/lfu

Automated flaky test report.

Title: Flaky test: TestMemoryControlWithUpdate in pkg/statistics/handle/cache/internal/lfu
- Repo: pingcap/tidb
- Package: pkg/statistics/handle/cache/internal/lfu
- Case: TestMemoryControlWithUpdate
- Branch: master
- Flaky Count: 1
- Time Thresholded Count: 0
- Latest Build: https://do.pingcap.net/jenkins/job/pingcap/job/tidb/job/merged_unit_test/24/

Window: 2026-09-11T00:00:00.000Z → 2026-09-12T00:00:00.000Z
Threshold: 100000 ms

Note: This issue is created for a specific branch; updates may be posted as comments.

Start in pkg/statistics/handle/cache/internal/lfu and run TestMemoryControlWithUpdate, using the linked merged_unit_test build as context for the reported flake. Trace the test and the memory-control update behavior to identify the nondeterministic condition. Done means the test reliably passes without losing the memory-control coverage.

Written by the indexing model from the issue text.