[BEAM-611] Add support for MapValues

• Type: Improvement
• Status: Resolved
• Priority: P3
• Resolution: Duplicate
• Fix Version/s: Not applicable
• Component/s: sdk-ideas
• Assignee: Jean-Baptiste Onofré
• Reporter: Luke Cwik
• Created: 31/Aug/16 21:13
• Updated: 16/May/20 13:21
• Resolved: 29/Sep/16 15:25

Description

Filed from: https://github.com/GoogleCloudPlatform/DataflowJavaSDK/issues/412

Often I find myself needing to simply map a function over just the values of a key-valued PCollection. MapElements works for this, but suffers a small hit in readability (imho) and introduces some possibility for error.

I wanted to see if there is any bandwidth / interest in adding this as a standard transform to the SDK. If so, I have attached a gist with a basic spike I have been using in my flows:

https://gist.github.com/trentonstrong/8b60933dca545eb2138b72899195019e

Issue Links

• duplicates: BEAM-621 Add MapValues and MapKeys functions