Force to disable logical split

[JaySon-Huang]

Signed-off-by: JaySon-Huang [email protected]

What problem does this PR solve?

Issue Number: close #5576

Problem Summary:
If user deploys tiflash with explicit setting profiles.default.dt_enable_logical_split = 1.
After several logical split, PageStorage V3 will throw an exception for the third time logical split and make TiFlash crash.

What is changed and how it works?

Force to disable logical split in the code path

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
  • ensure the logical split settings will be forced set to false by checking the log
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

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[JaySon-Huang]

/run-all-tests

[breezewish]

Maybe we should use ref issue instead of close issue, so that the issue can be closed when the incompatibility is resolved?

[JaySon-Huang]

Maybe we should use ref issue instead of close issue, so that the issue can be closed when the incompatibility is resolved?

The issue #5576 is created for incompatibility and triage whether it needs to be resolved on release-6.2. The final incompatibility issue should be resolved as closing the original issue #5570

[sre-bot]

Coverage for changed files

Filename                                                                                                Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
/home/jenkins/agent/workspace/tiflash-build-common/tiflash/dbms/src/Storages/DeltaMerge/DMContext.h           4                 0   100.00%           4                 0   100.00%           7                 0   100.00%           0                 0         -
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                                                                                         4                 0   100.00%           4                 0   100.00%           7                 0   100.00%           0                 0         -

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
19037      9209             51.63%    215877  93609        56.64%

full coverage report (for internal network access only)

[JaySon-Huang]

close as the issue is resolved by #5612