[GitHub] [doris] morningman commented on pull request #18997: [Enhencement](Export/Outfile) add property for outfile/export and add test

["morningman (via GitHub)" <gi...@apache.org>]

morningman commented on PR #18997:
URL: https://github.com/apache/doris/pull/18997#issuecomment-1527788365

   We should add a FE config `enable_export_delete_existing_files`. And the default value is false.
   Because this is a very dangerous operation, that user may specified export dir `/`, and it will delete the whole dir!
   
   So:
   1. add this config to disable it by default.
   2. add comment and document to notice that it is dangerous config that should only be used in test env.
   


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