morningman opened a new pull request, #17431:
URL: https://github.com/apache/doris/pull/17431

   # Proposed changes
   
   Issue Number: close #xxx
   
   ## Problem summary
   
   1. fix heap-use-after-free
   
   The OrcReader has a internal `FileInputStream`, If the file is empty, the 
memory of `FileInputStream` will leak.
   Besides, there is a `Statistics` instance in `FileInputStream`. 
`FileInputStream` maybe delete if the orc reader
   is inited failed, but `Statistics` maybe used when orc reader is closed, 
causing heap-use-after-free error.
   
   2. Potential memory leak
   
   When init file scanner in file scan node, the file scanner prepare failed, 
the memory of file scanner will leak.
   
   ## Checklist(Required)
   
   * [ ] Does it affect the original behavior
   * [ ] Has unit tests been added
   * [ ] Has document been added or modified
   * [ ] Does it need to update dependencies
   * [ ] Is this PR support rollback (If NO, please explain WHY)
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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