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https://issues.apache.org/jira/browse/SPARK-36619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gengliang Wang resolved SPARK-36619.
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Fix Version/s: 3.2.0
Resolution: Fixed
Issue resolved by pull request 33870
[https://github.com/apache/spark/pull/33870]
> HDFSBackedStateStore and RocksDBStateStore have bugs on prefix scan
> -------------------------------------------------------------------
>
> Key: SPARK-36619
> URL: https://issues.apache.org/jira/browse/SPARK-36619
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 3.2.0
> Reporter: Jungtaek Lim
> Assignee: Jungtaek Lim
> Priority: Blocker
> Fix For: 3.2.0
>
>
> In RocksDB state store provider implementation, we leverage iterators on
> prefix scan, which are being closed in rollback() method.
> While this works now for session window since state store instance in read
> physical plan will always call abort, it could bring correctness issue for
> stateful operator which doesn't instantiate two different physical plans on
> read and write.
> We should make sure these iterators get closed to let these iterators don't
> affect multiple micro-batches (plays as side-effect).
> In HDFSBackedStateStore, we copy both data map and prefix key map on creating
> new map for writing, but we copied prefix key map as it is, which does
> shallow copy on value side (the type of value is Set), which is broken on
> reloading aborted version.
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