fix: [6570595001] Add correct error handling logic.

[Simon9997]

Description

Issue(s)

• Close/close/Fix/fix/Resolve/resolve: Issue Link

Checklist

Please check the items in the checklist if applicable.

• Is the user manual updated?
• Are the test cases passed and automated?
• Is there no significant decrease in test coverage?

[gemini-code-assist]

Summary of Changes

Hello @Simon9997, 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!

This pull request addresses a critical error handling oversight within the metaDropTableColumn function. Previously, when an error occurred, it was logged, but the function would continue execution without returning the appropriate error code. The change ensures that the function immediately exits with the correct error status upon encountering a failure, thereby improving the robustness and reliability of the metadata management system.

Highlights

• Error Handling Fix: Corrected the error handling logic in the metaDropTableColumn function to ensure that an error code is properly returned after an error is detected and logged, preventing unintended fall-through to successful path logic.

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[Copilot]

Pull request overview

This PR fixes a bug in the metaDropTableColumn function where an error code was not being returned after handling a failure in metaHandleEntry2. The missing return statement caused the function to continue executing instead of properly propagating the error.

Key changes:

• Added TAOS_RETURN(code) statement after error logging and cleanup in the metaHandleEntry2 error path

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[gemini-code-assist]

Code Review

This pull request addresses a critical error handling issue in the metaDropTableColumn function. The addition of TAOS_RETURN(code) within the error handling block for a failed metaHandleEntry2 call is a crucial fix. Previously, the function would continue execution after encountering this error, which could lead to a null pointer dereference later on when pEntry is used after being freed. This change ensures immediate exit upon error, preventing potential crashes and making the code more robust. The fix is correct and necessary.