twalthr opened a new pull request #14619:
URL: https://github.com/apache/flink/pull/14619


   ## What is the purpose of the change
   
   This ensures a smooth mapping between `TypeInformation` and `DataType`. A 
user can decide whether `TypeInformation` should be treated as an entire RAW 
type or if instances should be converted to logical types on a best effort 
basis. In any case, a user will not get an exception during conversion anymore 
because every `TypeInformation` can be mapped to a non-legacy type in the Blink 
planner.
   
   ## Brief change log
   
   - Add a new TypeInformation to DataType converter that is backed by 
`DataTypeFactory`
   - Add API methods for creating a `DataType` either via 
`DataTypes.of(TypeInformation)` or `DataTypes.RAW(TypeInformation)`
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
   - `DataTypesTest`
   - `TypeInfoDataTypeConverterTest`
   - `TypeInfoDataTypeConverterScalaTest`
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): yes
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: yes
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): no
     - Anything that affects deployment or recovery: JobManager (and its 
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? yes
     - If yes, how is the feature documented? JavaDocs
   


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