Github user andralungu commented on the pull request:
https://github.com/apache/flink/pull/1058#issuecomment-135396805
Yup that's what I thought as well.
However, I only tested `zipWithUniqueId` on a cluster.
A student came to me and said that `zipWithIndex` did not work in a cluster
environment (I believed him) and claimed some days after via the Jira issue
that this was the fix that worked for him.
That's all the input I have.
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