Github user chiwanpark commented on the pull request:
https://github.com/apache/flink/pull/1197#issuecomment-145606437
It occured by jline library version mismatching between Scala 2.10 and
2.11. Since Scala 2.11.5, we don't need jline dependency. Scala REPL uses its
own jline library. So I upgraded Scala minor version to 2.11.7 and moved jline
to Scala 2.10 only dependencies list.
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