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https://issues.apache.org/jira/browse/BEAM-9825?focusedWorklogId=436244&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-436244
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ASF GitHub Bot logged work on BEAM-9825:
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Author: ASF GitHub Bot
Created on: 21/May/20 22:26
Start Date: 21/May/20 22:26
Worklog Time Spent: 10m
Work Description: amaliujia commented on pull request #11610:
URL: https://github.com/apache/beam/pull/11610#issuecomment-632377843
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Issue Time Tracking
-------------------
Worklog Id: (was: 436244)
Remaining Estimate: 85.5h (was: 85h 40m)
Time Spent: 10.5h (was: 10h 20m)
> Transforms for Intersect, IntersectAll, Except, ExceptAll, Union, UnionAll
> --------------------------------------------------------------------------
>
> 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
> Assignee: Darshan Jani
> Priority: P2
> Original Estimate: 96h
> Time Spent: 10.5h
> Remaining Estimate: 85.5h
>
> 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_
>
> * Except
> 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_
> * Union
> Find the elements that are either of two PCollection.
> Implement IntersetAll, ExceptAll and UnionAll variants of transforms.
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