[Fix](Export) Export delete multiple times when specify the delete_existing_files property ()
#39304
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…xisting_files` property (apache#38400) When the `Export` statement specifies the `delete_existing_files` property, each `Outfile` statement generated by the `Export` will carry this property. This causes each `Outfile` statement to delete existing files, so only the result of the last Outfile statement will be retained. So, we add a rpc method which can delete existing files for `Export` statement and the `Outfile` statements generated by the `Export` will not carry `delete_existing_files` property any more.
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bp: #38400
When the
Exportstatement specifies thedelete_existing_filesproperty, eachOutfilestatement generated by theExportwill carry this property. This causes eachOutfilestatement to delete existing files, so only the result of the last Outfile statement will be retained.So, we add a rpc method which can delete existing files for
Exportstatement and theOutfilestatements generated by theExportwill not carrydelete_existing_filesproperty any more.Proposed changes
Issue Number: close #xxx