[GitHub] [pulsar] codelipenghui opened a new pull request #5504: [Transaction coordinator]Add transaction metadata store service

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codelipenghui opened a new pull request #5504: [Transaction coordinator]Add transaction metadata store service
URL: https://github.com/apache/pulsar/pull/5504
 
 
   ### Motivation
   
   Add transaction metadata store service and auto create 1 transaction metadata store with 
   id 0
   
   ### Verifying this change
   
   Add new unit tests for transaction metadata store service
   
   ### 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)
     - The public API: (no)
     - The schema: (no)
     - The default values of configurations: (no)
     - The wire protocol: (no)
     - The rest endpoints: (no)
     - The admin cli options: (no)
     - Anything that affects deployment: (no)
   
   ### Documentation
   
     - Does this pull request introduce a new feature? (yes)
   
   This is a internal mechanism for transaction streaming
   

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