region: update region-size from 96MB to 256MB.

[LykxSassinator]

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What is changed, added or deleted? (Required)

Ref: tikv/tikv#17309

This pr specify the newly updated configuration change to the default value of region-size, changing it from 96MB to 256MB.

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• master (the latest development version)
• v8.4 (TiDB 8.4 versions)
• v8.3 (TiDB 8.3 versions)
• v8.2 (TiDB 8.2 versions)
• v8.1 (TiDB 8.1 versions)
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[ti-chi-bot]

Hi @LykxSassinator. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[LykxSassinator]

/cc @qiancai

[LykxSassinator]

As discussed offline, please remove the v8.3 tag and hold it until v8.4. /cc @qiancai

[lilin90]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-24 07:20:51.407421753 +0000 UTC m=+1550521.147845694: ☑️ agreed by hfxsd.
• 2024-09-26 08:52:08.643029929 +0000 UTC m=+1728798.383453877: ☑️ agreed by lilin90.

[lilin90]

/ok-to-test

[hfxsd]

/approve

[hfxsd]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hfxsd

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