Introduce blocklist mechanism on serverless TiFlash WN node #9575

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#9578

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Introduce blocklist mechanism on serverless TiFlash WN node#9575

#9578

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type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

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CalvinNeo

opened on Nov 1, 2024

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Enhancement

When selecting TiFlash stores on batch cop tasks, we filter blocked TiFlash stores.

If no stores are available, the backoffer will eventrually throw Exceptions.

1. Support blocklisting TiFlash WN node tikv/client-c#198
2. https://github.com/tidbcloud/tiflash-cse/pull/308

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