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https://issues.apache.org/jira/browse/BEAM-7665?focusedWorklogId=276339&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-276339
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ASF GitHub Bot logged work on BEAM-7665:
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Author: ASF GitHub Bot
Created on: 13/Jul/19 22:31
Start Date: 13/Jul/19 22:31
Worklog Time Spent: 10m
Work Description: lostluck commented on issue #8976: [BEAM-7665] Support
TypeDefinition options in beam.Combine()
URL: https://github.com/apache/beam/pull/8976#issuecomment-511158401
Sorry for this not being merged in yet. Ahmet gets back soon.
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Issue Time Tracking
-------------------
Worklog Id: (was: 276339)
Time Spent: 50m (was: 40m)
> Support TypeDefinition options in beam.Combine()
> ------------------------------------------------
>
> Key: BEAM-7665
> URL: https://issues.apache.org/jira/browse/BEAM-7665
> Project: Beam
> Issue Type: Improvement
> Components: sdk-go
> Reporter: Tianyang Hu
> Assignee: Tianyang Hu
> Priority: Major
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Today, CombineFn's output type must be either concrete or a generic type that
> can be inferred from the input type. This doesn't work if the input type is
> struct\{U, V\} while the output type is V (where U and V are generic types).
> Similar to ParDo, we could add TypeDefinition options support to Combine.
> This will bind generic types in the CombineFn to the specified concrete types
> at pipeline construction time.
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