TakaHiR07 opened a new pull request, #20065:
URL: https://github.com/apache/pulsar/pull/20065

   Master Issue: #19747 
   
   ### Motivation
   
   Related to issue, endTxn behave as kafka. 
   
   When txn status update to committing/aborting, respond success to client.
   
   ### Modifications
   
   1. finish future when update txn status to committing/aborting successfully, 
then asynchronously process committing->committed
   2. retry committing->committed when occur retryable exception
   3. In case of failing to process committing->committed, add a metric to 
record unexpected nonRetryable exception count when tc is still available
   
   ### Does this pull request potentially affect one of the following parts:
   
   <!-- DO NOT REMOVE THIS SECTION. CHECK THE PROPER BOX ONLY. -->
   
   *If the box was checked, please highlight the changes*
   
   - [ ] Dependencies (add or upgrade a dependency)
   - [ ] The public API
   - [ ] The schema
   - [ ] The default values of configurations
   - [ ] The threading model
   - [ ] The binary protocol
   - [ ] The REST endpoints
   - [ ] The admin CLI options
   - [ ] The metrics
   - [ ] Anything that affects deployment
   
   ### Documentation
   
   <!-- DO NOT REMOVE THIS SECTION. CHECK THE PROPER BOX ONLY. -->
   
   - [ ] `doc` <!-- Your PR contains doc changes. -->
   - [ ] `doc-required` <!-- Your PR changes impact docs and you will update 
later -->
   - [x] `doc-not-needed` <!-- Your PR changes do not impact docs -->
   - [ ] `doc-complete` <!-- Docs have been already added -->
   
   ### Matching PR in forked repository
   
   PR in forked repository: <!-- ENTER URL HERE -->
   
   


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