Hi, all
When using Flink window, I do not know why should we use an evictor
operator in flink window, after reading the EvictingWindowOperator.java, I
think we could do all the [evcitor] things in the userfunction. Could
anyone help me to understand these?
I have digged the history of `Evictor.java`, but did not gotten the
reason
1. in FLINK-2677(https://issues.apache.org/jira/browse/FLINK-2677)
Flink introduced the evictor operator, but I did not find the reason why we
should have the evictor operator.
2. In FLIP-4 we enhance the Evictor operator.
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