morningman opened a new pull request, #32131:
URL: https://github.com/apache/doris/pull/32131

   ## Proposed changes
   
   In previous, the counter in `profile` may be updated when close the file 
reader.
   And the file reader may be closed when the object being deconstruted.
   But at that time, the `profile` object may already be deleted, causing NPE 
and BE will crash.
   
   This PR try to fix this issue:
   
   1. Remove the "profile counter update" logic from all `close()` method.
   
   2. Add a new interface `ProfileCollector`
   
        It has 2 methods:
        
        - `collect_profile_at_runtime()`
   
                It can be called at runtime, eg, in every `get_next_block()` 
method.
                So that the counter in profile can be updated at runtime.
                
        - `collect_profile_before_close()`
   
                Should be called before the object call `close()`. And it will 
only be called once.
                
   3. Derived from `ProfileCollector`
   
        All classes which may update the profile counter in `close()` method 
should extends
        the `ProfileCollector`. Such as `GenericReader`, etc. And implement 
`collect_profile_before_close()`
        
        And `collect_profile_before_close()` will be called in 
`scanner->mark_to_need_to_close()`.
        
   ## 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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