merge: from 3.3.6 to 3.3.8 branch

[guanshengliang]

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 @guanshengliang, 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 integrates changes from the 3.3.6 to 3.3.8 branch, focusing on refining core functionalities. It includes a critical correction to the connection type used for TMQ consumer initialization and an enhancement to error handling within metadata table operations, leading to more robust and predictable system behavior.

Highlights

• TMQ Consumer Connection Type Correction: The connection type used during the initialization of a TMQ consumer in tmq_consumer_new has been corrected from CONN_TYPE__TMQ to CONN_TYPE__QUERY.
• Metadata Table Column Drop Error Handling: Improved error handling in metaDropTableColumn by adding TAOS_RETURN(code); to ensure an immediate return of the error code after freeing resources when an error occurs during table column drop operations.

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[gemini-code-assist]

Code Review

This pull request merges changes from the 3.3.6 branch to the 3.3.8 branch, containing two targeted bug fixes. In clientTmq.c, the connection type for a new TMQ consumer is changed from CONN_TYPE__TMQ to CONN_TYPE__QUERY, which is likely a fix to align with server-side connection handling updates. In metaTable2.c, a return statement is added within an error handling block in the metaDropTableColumn function, correctly preventing a fall-through that could lead to a double-free of a pointer. Both changes appear correct and improve the robustness of the code. No issues were found in this review.