Github user dianfu commented on the issue:
https://github.com/apache/flink/pull/4513
As discussed with @wuchong offline, I will continue the work of #4145 as
this is required by the feature of cep on sql, see the PR of FLINK-7062 for
details.
@dawidwys @kl0u Could you help to review? Actually, I just rebased the code
of #4145 and addressed the comments there. Most of the fixes refer the test
branch https://github.com/kl0u/flink/tree/cep-iter-pr by @kl0u. I have not
removed IterativeCondition as I think it breaks the backward compatibility.
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