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ASF GitHub Bot logged work on BEAM-9035:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/Mar/20 11:24
            Start Date: 15/Mar/20 11:24
    Worklog Time Spent: 10m 
      Work Description: alexvanboxel commented on issue #10413: [BEAM-9035] 
Typed options for Row Schema and Field
URL: https://github.com/apache/beam/pull/10413#issuecomment-599197547
 
 
   I think I addresses now all the issues in the latest fixup. 
   
   Talking about field metadata: yes this will be another PR. I didn't want 
this all in one PR. This is the groundwork to get a decent API in. I have at 
least 2 related PR's (proto and avro support) waiting before tackling removal 
of metadata though.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 403574)
    Time Spent: 7h 50m  (was: 7h 40m)

> BIP-1: Typed options for Row Schema and Fields
> ----------------------------------------------
>
>                 Key: BEAM-9035
>                 URL: https://issues.apache.org/jira/browse/BEAM-9035
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-java-core
>            Reporter: Alex Van Boxel
>            Assignee: Alex Van Boxel
>            Priority: Major
>             Fix For: 2.19.0
>
>          Time Spent: 7h 50m
>  Remaining Estimate: 0h
>
> This is the first issue of a multipart commit: this ticket implements the 
> basic infrastructure of options on row and field.
> Full explanation:
> Introduce the concept of Options in Beam Schema’s to add extra context to 
> fields and schema. In contracts to metadata, options would be added to 
> fields, logical types and rows. In the options schema convertors can add 
> options/annotations/decorators that were in the original schema, this context 
> can be used in the rest of the pipeline for specific transformations or 
> augment the end schema in the target output.
> Examples of options are:
>  * informational: like the source of the data, ...
>  * drive decisions further in the pipeline: flatten a row into another, 
> rename a field, ...
>  * influence something in the output: like cluster index, primary key, ...
>  * logical type information
> And option is a key/typed value combination. The advantages of having the 
> value types is: 
>  * Having strongly typed options would give a *portable way of Logical Types* 
> to have structured information that could be shared over different languages.
>  * This could keep the type intact when mapping from a formats that have 
> strongly typed options (example: Protobuf).
> This is part of a multi ticket implementation. The following tickets are 
> related:
>  # Typed options for Row Schema and Fields
>  # Convert Proto Options to Beam Schema options
>  # Convert Avro extra information for Beam string options
>  # Replace meta data with Logical Type options
>  # Extract meta data in Calcite SQL to Beam options
>  # Extract meta data in Zeta SQL to Beam options
>  # Add java example of using option in a transform 
> This feature is discussed with Reuven Lax, Brian Hulette



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