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https://issues.apache.org/jira/browse/BEAM-4231?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Sidhom closed BEAM-4231.
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Resolution: Fixed
Fix Version/s: Not applicable
> Runner utility for Coder instantiation
> --------------------------------------
>
> Key: BEAM-4231
> URL: https://issues.apache.org/jira/browse/BEAM-4231
> Project: Beam
> Issue Type: Bug
> Components: runner-core
> Reporter: Ben Sidhom
> Assignee: Ben Sidhom
> Priority: Minor
> Fix For: Not applicable
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Portable runners need to instantiate coders for communicating with SDK
> harnesses in a consistent way. They cannot simply instantiate coders as
> defined by PCollections because some component coders may only be known to
> specific SDKs. Unknown coders should be length-prefixed; the underlying
> elements should only be exposed to runners as byte strings.
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