[jira] [Created] (BEAM-9825) Transforms for Intersect, Difference and Commons

["Darshan Jani (Jira)" <ji...@apache.org>]

Darshan Jani created BEAM-9825:
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             Summary: Transforms for Intersect, Difference and Commons 
                 Key: BEAM-9825
                 URL: https://issues.apache.org/jira/browse/BEAM-9825
             Project: Beam
          Issue Type: New Feature
          Components: sdk-java-core
            Reporter: Darshan Jani


I'd like to propose following new high-level transforms.

 * Intersect
Compute the intersection between elements of two PCollection.
Given _leftCollection_ and _rightCollection_, this transform returns a collection containing elements that common to both _leftCollection_ and _rightCollection_
 
Compute the intersection of two elements of two PCollections.
 * Difference

Compute the difference between elements of two PCollection.
Given _leftCollection_ and _rightCollection_, this transform returns a collection containing elements that are in _leftCollection_ but not in _rightCollection_

 * Commons
Find the elements that are common to two PCollection, like the Unix
comm utility.

Given _leftCollection_ and rightCollection, this transform returns a CommonsResults with following:
 # elements only in _leftCollection_
 # elements only in _rightCollection_
 # elements in both collections

I would like to work on this changes and submit a PR.



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