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https://issues.apache.org/jira/browse/BEAM-7855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17548059#comment-17548059
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Danny McCormick commented on BEAM-7855:
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This issue has been migrated to https://github.com/apache/beam/issues/19715
> Support logical types when translating the portable row coder representation
> ----------------------------------------------------------------------------
>
> Key: BEAM-7855
> URL: https://issues.apache.org/jira/browse/BEAM-7855
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Brian Hulette
> Priority: P3
> Labels: Clarified
>
> Originally SchemaCoder and RowCoder relied on including serialized java
> classes and functions to support logical types, but the [portable schema
> representation|https://s.apache.org/beam-schema] only includes a URN for a
> logical type. We will need to be able to re-construct logical types given
> just a URN, presumably by creating some sort of logical type registry indexed
> by URN.
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