swhelan091 opened a new pull request #11066: [FLINK-15941] [format-avro] 
RegistryAvroSerializationSchema registers schema on first message only
URL: https://github.com/apache/flink/pull/11066
 
 
     ## What is the purpose of the change
   
   This pull request improves the RegistryAvroSerializationSchema class such 
that it will only attempt to register the schema with the Schema Registry on 
the first message. All subsequent messages will retrieve the schema id from the 
cache. 
   
   ## Brief change log
   
   *(for example:)*
     - Update RegistryAvroSerializationSchema to utilize the same instance of 
SchemaCoder for each message so it can retrieve the schema id from the cache 
after initial registration.
   
   ## Verifying this change
   
   *(Please pick either of the following options)*
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: (no)
     - The serializers: (don't know)
     - The runtime per-record code paths (performance sensitive): (no)
     - Anything that affects deployment or recovery: JobManager (and its 
components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
     - The S3 file system connector: (no)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (no)
     - If yes, how is the feature documented? (not applicable)
   

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