[GitHub] [pulsar] codelipenghui opened a new pull request #4214: [schema] Support compatibility check over all existing schemas.

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

codelipenghui opened a new pull request #4214: [schema] Support compatibility check over all existing schemas.
URL: https://github.com/apache/pulsar/pull/4214
 
 
   Fixes #4170 
   
   ### Motivation
   
   Currently the schema compatibility check is only done with the latest schema. That's probably not enough especially we now support schema versions for Struct schema. We need to the ability for check the compatibility with all existing schema version.
   
   ### Modifications
   
   Add `FORWARD_TRANSITIVE`, `BACKWARD_TRANSITIVE` and `FULL_TRANSITIVE` compatibility strategy.
   
   ### Verifying this change
   
   This change is already covered by existing tests, such as SchemaServiceTest, BaseAvroSchemaCompatibilityTest
   
   ### 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: (no)
     - The schema: (yes)
     - 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? (no)
   

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