Github user dawidwys commented on the issue:
https://github.com/apache/flink/pull/3390
Just had a second thought, this solution is temporary anyway, so that the
current Pattern graph is processed correctly. Before changing anything in
`NFACompiler` we will need to change the `process` function in NFACompiler.
We do not impose the first assumption, so not sure if we would benefit
anything from imposing the second one.
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