lvyanquan opened a new pull request, #8967:
URL: https://github.com/apache/hudi/pull/8967

   ### Change Logs
   
   delete operation will use schema of lastInstant. 
   Howerver, if last commit is deletion on an empty table, schema will be `""` 
string, if we throw exception now, we could not execute idempotent deletion.
   Add a test for this situation.
   
   relevant pr https://github.com/apache/hudi/pull/5610
   
   ### Impact
   
   fix bug for deletion from an empty table.
   
   ### Risk level (write none, low medium or high below)
   
    low 
   
   ### Contributor's checklist
   
   - [x] Read through [contributor's 
guide](https://hudi.apache.org/contribute/how-to-contribute)
   - [x] Change Logs and Impact were stated clearly
   - [x] Adequate tests were added if applicable
   - [x] CI passed
   


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