[GitHub] [pulsar] codelipenghui opened a new pull request #4621: Support batch receive in java client.

[GitBox <gi...@apache.org>]

codelipenghui opened a new pull request #4621: Support batch receive in java client.
URL: https://github.com/apache/pulsar/pull/4621
 
 
   ### Motivation
   
   Support messages batch receiving, some application scenarios can be made simpler. Users often increase application throughput through batch operations. For example, batch insert or update database.
   
   At present, we provide the ability to receive a single message. If users want to take advantage of batch operating advantages, need to implement a message collector him self. So this proposal aims to provide a universal interface and mechanism for batch receiving messages.
   
   ### Verifying this change
   
   Added new UT to verify this change.
   
   ### 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): (no)
     - The public API: (yes)
     - 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)
     - If yes, how is the feature documented? (docs and JavaDocs)
   

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