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https://issues.apache.org/jira/browse/FLINK-14050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16931244#comment-16931244
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Aljoscha Krettek commented on FLINK-14050:
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I think it's fine to simplify the class hierarchy,
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https://issues.apache.org/jira/browse/FLINK-14050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16931142#comment-16931142
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TisonKun commented on FLINK-14050:
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I will start progress in hours if there is no other concerns here.
