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https://issues.apache.org/jira/browse/KAFKA-13349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17479635#comment-17479635
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Guozhang Wang commented on KAFKA-13349:
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[~sagarrao] I've just re-assigned the task to you.
> Allow Iterator.remove on KeyValueIterator
> -----------------------------------------
>
> Key: KAFKA-13349
> URL: https://issues.apache.org/jira/browse/KAFKA-13349
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Guozhang Wang
> Assignee: loboxu
> Priority: Major
> Labels: needs-kip, newbie++
>
> Today Stream's state store's range iterator does not support `remove`. We
> could consider adding such support for all the built-in state stores:
> * RocksDB's native iterator does not support removal, but we can always do a
> delete(key) concurrently while the iterator is open on the snapshot.
> * In-Memory: straight forward implementation.
> The benefit of that is then for range-and-delete truncation operation we do
> not necessarily have to be cautious about concurrent modification exceptions.
> This could also help GC with in-memory stores.
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