Github user davidyan74 commented on the pull request:
https://github.com/apache/incubator-apex-core/pull/313#issuecomment-216389226
I think in the field of streaming technology, all of these different nodes
in the DAG share the same concept of an operator. So, instead of introducing a
new term "vertex" to the platform, how about renaming this interface to
"GenericOperator"?
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