Warn users about the grpc-compression-type config

[sunxiaoguang]

Add warnings to users of TiDB about the differences in the supported options for grpc-compression-type.

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[gemini-code-assist]

Hello @sunxiaoguang, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request addresses a potential misconfiguration issue in TiDB related to the grpc-compression-type setting. Specifically, it adds a warning to the documentation to inform users that while TiKV supports none, deflate, and gzip for this setting, TiDB only supports none and gzip. This aims to prevent users from inadvertently configuring an unsupported compression type in TiDB, which could lead to unexpected behavior or errors.

Highlights

• Documentation Update: A warning message has been added to the tikv-configuration-file.md file to highlight the discrepancy in supported grpc-compression-type options between TiKV and TiDB.
• Configuration Awareness: The change aims to increase user awareness regarding the correct configuration of grpc-compression-type in TiDB to avoid potential issues.

Changelog

• tikv-configuration-file.md
  • Added a warning about the supported grpc-compression-type options in TiDB, clarifying that only none and gzip are supported, while TiKV also supports deflate.

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[gemini-code-assist]

Code Review

The pull request adds a warning to the TiDB documentation regarding the supported options for grpc-compression-type. This is a helpful addition to inform users about the potential compatibility issues. The change is straightforward and addresses a specific configuration detail.

Merge Readiness

The pull request is a small documentation update that improves clarity for TiDB users. Given the straightforward nature of the change and the absence of any identified issues, the pull request appears ready for merging. However, I am unable to directly approve the pull request, and users should have others review and approve this code before merging.