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https://issues.apache.org/jira/browse/SPARK-48588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-48588:
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Labels: pull-request-available (was: )
> Fine-grained State Data Source
> ------------------------------
>
> Key: SPARK-48588
> URL: https://issues.apache.org/jira/browse/SPARK-48588
> Project: Spark
> Issue Type: Epic
> Components: Structured Streaming
> Affects Versions: 4.0.0
> Reporter: Yuchen Liu
> Priority: Major
> Labels: pull-request-available
>
> The current state reader API replays the state store rows from the latest
> snapshot and newer delta files if any. The issue with this mechanism is that
> sometimes, the snapshot files could be wrongly constructed, or user want to
> know the change of state across batches. We need to improve the State Reader
> so that it can handle a variety of fine-grained requirements. For example,
> reconstruct a state based on arbitrary snapshot; support CDC mode for state
> evolution.
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