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https://issues.apache.org/jira/browse/SPARK-60181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jungtaek Lim resolved SPARK-60181.
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Fix Version/s: 4.3.0
Resolution: Fixed
Issue resolved by pull request 59389
[https://github.com/apache/spark/pull/59389]
> Guard stream-stream join state format and RocksDB merge operator compatibility
> ------------------------------------------------------------------------------
>
> Key: SPARK-60181
> URL: https://issues.apache.org/jira/browse/SPARK-60181
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 4.3.0, 4.4.0
> Reporter: Jungtaek Lim
> Assignee: Jungtaek Lim
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.3.0
>
>
> Recent stream-stream state format versions require RocksDB state store
> provider to be available, but the default state store provider is HDFS so it
> could be possible that both configs are not set for the same.
> In addition, stream-stream state format version 4 requires RocksDB's merge
> operator version to 2, which can happen the same.
> In both cases, it is better for the engine to adjust the configs to make the
> query run rather than leaving the join operator to be broken.
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