plchy2 commented on PR #60558:
URL: https://github.com/apache/doris/pull/60558#issuecomment-3854647320

   ### What problem was fixed?
   The session variable `query_timeout` validation currently throws 
`UnsupportedOperationException`
   for invalid values. This is inconsistent with other FE validations and 
results in unclear
   error handling for invalid user input.
   
   Additionally, non-numeric values could cause an unhandled 
`NumberFormatException`.
   
   ### How was it fixed?
   - Replaced `UnsupportedOperationException` with `AnalysisException`
   - Added explicit number format validation for `query_timeout`
   - Improved error messages for invalid values
   
   ### Behavior changes
   **Before**
   - Invalid `query_timeout` values threw `UnsupportedOperationException`
   - Non-numeric values could cause unclear runtime exceptions
   
   **After**
   - Invalid values throw `AnalysisException`
   - Non-numeric input is handled gracefully with clear error messages
   
   ### Impact
   This change improves consistency of session variable validation and provides 
clearer
   feedback to users without affecting existing valid configurations.
   


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