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https://issues.apache.org/jira/browse/FLINK-3273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16809678#comment-16809678
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Dawid Wysakowicz commented on FLINK-3273:
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[~fan_li_ya] It is a much bigger effort. Right now flink-streaming-java depends
on flink-runtime (this was probably a bad design decision that we unfortunately
have to leave with for now) which pulls scala. So we won't be able to make
flink-streaming-java independent of scala as long as we don't invert that
dependency, but this is a huge effort.
> Remove Scala dependency from flink-streaming-java
> -------------------------------------------------
>
> Key: FLINK-3273
> URL: https://issues.apache.org/jira/browse/FLINK-3273
> Project: Flink
> Issue Type: Improvement
> Components: API / DataStream
> Reporter: Maximilian Michels
> Priority: Major
>
> {{flink-streaming-java}} depends on Scala through {{flink-clients}},
> {{flink-runtime}}, and {{flink-testing-utils}}. We should get rid of the
> Scala dependency just like we did for {{flink-java}}. Integration tests and
> utilities which depend on Scala should be moved to {{flink-tests}}.
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