Not recommend setting tiflash logical split since 6.2

[JaySon-Huang]

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

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What is changed, added or deleted? (Required)

According to pingcap/tiflash#5576, 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.

Here we declare the config item to be deprecated

Which TiDB version(s) do your changes apply to? (Required)

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions.

• master (the latest development version)
• v6.2 (TiDB 6.2 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)
• v5.1 (TiDB 5.1 versions)
• v5.0 (TiDB 5.0 versions)

What is the related PR or file link(s)?

• This PR is translated from: Not recommend setting tiflash logical split since 6.2 docs-cn#10840
• Other reference link(s):

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• Delete files
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• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• shichun-0415

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[JaySon-Huang]

/cc @flowbehappy

[flowbehappy]

Suggested change

	## Note that logical split has compatibility issues with other features since v6.2.0 and
	## it is not recommended to set the value to true.
	## Note that logical split has known issue on v6.2.0 and later versions,
	## it is strongly not recommended to set the value to true.

[JaySon-Huang]

PTAL again @shichun-0415 @flowbehappy

[shichun-0415]

/verify

[shichun-0415]

/remove status LGT1
/status LGT2
/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 25f5292