Github user iduanyingjie commented on the issue:
https://github.com/apache/flink/pull/3816
In this document
[https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/stream/operators/index.html#datastream-transformations](url)
`keyedStream.fold("start")((str, i) => { str + "-" + i })`
I want to do the same thing, what am I supposed to do and and don't use
deprecated API---
