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https://issues.apache.org/jira/browse/SPARK-55123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anish Shrigondekar resolved SPARK-55123.
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Fix Version/s: 4.2.0
Resolution: Fixed
Issue resolved by pull request 53900
[https://github.com/apache/spark/pull/53900]
> Add SequentialUnionOffset for tracking sequential source processing
> -------------------------------------------------------------------
>
> Key: SPARK-55123
> URL: https://issues.apache.org/jira/browse/SPARK-55123
> Project: Spark
> Issue Type: Task
> Components: Structured Streaming
> Affects Versions: 4.2.0
> Reporter: Eric Marnadi
> Assignee: Eric Marnadi
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.2.0
>
>
> Add SequentialUnionOffset class to support Sequential Union operations in
> Structured Streaming. This offset type enables tracking the state of
> sequential source processing in backfill-to-live streaming scenarios.
> The implementation includes:
> * SequentialUnionOffset case class that extends OffsetV2
> * Name-based source tracking (not index-based) for stability across query
> restarts
> * Validation logic to ensure correctness of offset state
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