CalvinKirs opened a new pull request, #58491:
URL: https://github.com/apache/doris/pull/58491

   ### changes 
   Based on the error message, there's a ClassCastException occurring in the 
LoadStmt class: 
   
   `Error: AzureProperties cannot be cast to ObjectStorageProperties Root 
Cause: `
   
   The current LoadStmt.checkS3Param() method has a protocol classification 
issue:
   Over-generalized scope: The method checks all storage types using 
ObjectStorageProperties
   Protocol confusion: Azure is an object storage service but not 
S3-compatible, so it shouldn't use S3-specific validation logic
   Type casting error: As shown in the error, AzureProperties cannot be cast to 
ObjectStorageProperties
   
   ### What problem does this PR solve?
   
   Issue Number: close #xxx
   
   Related PR: #xxx
   
   Problem Summary:
   
   ### Release note
   
   None
   
   ### Check List (For Author)
   
   - Test <!-- At least one of them must be included. -->
       - [ ] Regression test
       - [ ] Unit Test
       - [ ] Manual test (add detailed scripts or steps below)
       - [ ] No need to test or manual test. Explain why:
           - [ ] This is a refactor/code format and no logic has been changed.
           - [ ] Previous test can cover this change.
           - [ ] No code files have been changed.
           - [ ] Other reason <!-- Add your reason?  -->
   
   - Behavior changed:
       - [ ] No.
       - [ ] Yes. <!-- Explain the behavior change -->
   
   - Does this need documentation?
       - [ ] No.
       - [ ] Yes. <!-- Add document PR link here. eg: 
https://github.com/apache/doris-website/pull/1214 -->
   
   ### Check List (For Reviewer who merge this PR)
   
   - [ ] Confirm the release note
   - [ ] Confirm test cases
   - [ ] Confirm document
   - [ ] Add branch pick label <!-- Add branch pick label that this PR should 
merge into -->
   
   


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