[GitHub] [pulsar] wolfstudy opened a new issue #4054: Exposing `MaxMessageSize` to user configuration

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

wolfstudy opened a new issue #4054: Exposing `MaxMessageSize` to user configuration
URL: https://github.com/apache/pulsar/issues/4054
 
 
   **Is your feature request related to a problem? Please describe.**
   
   Now, I want to send a larger message to pulsar, but pulsar's `MaxMessageSize` is in the form of hardcode. If the size of the message exceeds 5Mb, the pulsar client will fail.
   
   code as follows:
   
   ```
   // Max message size is limited by max BookKeeper entry size which is 5MB, and we need to account
       // for headers as well.
       public final static int MaxMessageSize = (5 * 1024 * 1024 - (10 * 1024));
       public final static int MaxFrameSize = 5 * 1024 * 1024;
   ```
   
   **Describe the solution you'd like**
   
   In kafka, `MaxMessageSize` is a configurable option. We can also consider exposing it to the user as a configurable option. Of course, we may need to modify the size of the bookkeeper for the size of the message.
   
   ```
   # The maximum netty frame size in bytes. Any message received larger than this will be rejeted. Default value is 5MB.
   # nettyMaxFrameSizeBytes=5242880
   ```
   

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