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https://issues.apache.org/jira/browse/SPARK-40464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-40464:
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Assignee: Apache Spark
> Support automatic data format conversion for shuffle state db
> -------------------------------------------------------------
>
> Key: SPARK-40464
> URL: https://issues.apache.org/jira/browse/SPARK-40464
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, YARN
> Affects Versions: 3.4.0
> Reporter: Yang Jie
> Assignee: Apache Spark
> Priority: Minor
>
> After SPARK-38888, Spark starts to support use RocksDB as the storage type
> of shuffle state db, but when users switch storage types, the original data
> store in `LevelDB/RocksDB` will not be automatically converted to another
> kind of storage now. The original data store will be retained and the new
> type data store will be created when switching storage types.
> This is not very friendly for migrating stock users to use RocksDB. If
> necessary, consider adding the function of automatic data format conversion:
> * LevelDB -> RocksDB
> * RocksDB -> LevelDB
>
>
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