Github user kl0u commented on the issue: https://github.com/apache/flink/pull/4172 Hi @dianfu . Thanks for updating the PR. I left some comments on the related JIRA (https://issues.apache.org/jira/browse/FLINK-6983) and the related https://issues.apache.org/jira/browse/FLINK-6939. I suggested to do these optimizations at the end, when all the features are in and focus for now in the CEP/SQL integration. Please let me know what you think!
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