[GitHub] [pulsar] liangyepianzhou opened a new pull request, #16931: [Improve][Txn][PIP-196]Segmented transaction buffer snapshot segment and index system topic

[GitBox]

liangyepianzhou opened a new pull request, #16931:
URL: https://github.com/apache/pulsar/pull/16931

   Master Issue: https://github.com/apache/pulsar/issues/16913
   ### Motivation
   Implement system topic client for snapshot segment topic and index topic to 
send segment snapshots or indexes.
   The configuration `transactionBufferSegmentedSnapshotEnabled` is used in the 
Transaction Buffer to determine which `AbortedTxnProcessor` is adopted by this 
TB.
   ### Modification
   Add a TransactionBufferSnapshotService to handle the system topic service:
   <img width="988" alt="image" 
src="https://user-images.githubusercontent.com/55571188/191040279-a647b07a-c084-4e2a-8814-090e52486ca4.png";>
 
   The abstraction for transaction system topic service:
   <img width="895" alt="image" 
src="https://user-images.githubusercontent.com/55571188/191043197-9a76672a-6701-44af-94d8-662a15433ba9.png";>
   The abstraction for transaction system topic client:
   <img width="778" alt="image" 
src="https://user-images.githubusercontent.com/55571188/191041224-eeaf318e-fe16-4f89-82ba-831976c073e3.png";>
   
   ### Verifying this change
   
   - [x] Make sure that the change passes the CI checks.
   
   *(Please pick either of the following options)*
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   *(or)*
   
   This change is already covered by existing tests, such as *(please describe 
tests)*.
   
   *(or)*
   
   This change added tests and can be verified as follows:
   
   *(example:)*
     - *Added integration tests for end-to-end deployment with large payloads 
(10MB)*
     - *Extended integration test for recovery after broker failure*
   
   ### Does this pull request potentially affect one of the following parts:
   
   *If `yes` was chosen, please highlight the changes*
   
     - Dependencies (does it add or upgrade a dependency): (yes / no)
     - The public API: (yes / no)
     - The schema: (yes / no / don't know)
     - The default values of configurations: (yes / no)
     - The wire protocol: (yes / no)
     - The rest endpoints: (yes / no)
     - The admin cli options: (yes / no)
     - Anything that affects deployment: (yes / no / don't know)
   
   ### Documentation
   
   Check the box below or label this PR directly.
   
   Need to update docs? 
   
   - [ ] `doc-required` 
   (Your PR needs to update docs and you will update later)
     
   - [x] `doc-not-needed` 
   (Please explain why)
     
   - [ ] `doc` 
   (Your PR contains doc changes)
   
   - [ ] `doc-complete`
   (Docs have been already added)


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