GitHub user twalthr opened a pull request:

    [FLINK-8630] [table] To support JSON schema to TypeInformation conversion

    ## What is the purpose of the change
    This PR implements (almost) full support of the JSON type. It includes:
    - Schema to TypeInformation conversion
    - Support for `number`, `integer`, `string`, `object`, `array` types
    - Initial support for date, time, and timestamp format and mapping to Flink 
    - Support for base64 encoded byte arrays
    - Nested support
    ## Brief change log
    - New module `flink-json` in `flink-formats`
    - New JsonSchemaConverter
    - Improved JsonRowSerialization/DeserializationSchema
    ## Verifying this change
    - Improved existing tests
    - New unit tests
    ## 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, 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? will document together with 
first JSON connector

You can merge this pull request into a Git repository by running:

    $ git pull FLINK-8630

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #5491
commit 7e18fbfb560aea10935a549b9dc4075f7018eb75
Author: twalthr <twalthr@...>
Date:   2018-02-12T17:18:44Z

    [FLINK-8630] [table] To support JSON schema to TypeInformation conversion



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