poorbarcode commented on PR #16841:
URL: https://github.com/apache/pulsar/pull/16841#issuecomment-1198020631

   Hi @codelipenghui
   
   > We have synchronized (pendingMarkDeleteOps) for both create cursor failure 
and `internalAsyncMarkDelete`, if triggered the ledger creation means the left 
thread got the lock and the right thread can only get the lock after the 
`mdEntry` is added to the `pendingMarkDeleteOps `, no?
   
   According to your tips, I found a new problem: see Flow-2 above. And I have 
modified the `Motivation`. 
   
   
   @codelipenghui @Technoboy- @mattisonchao  Could you review this PR again?
   
   
   
   
   


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