java.lang.IllegalStateException: A TStream with a tuple type that contains a generic or unknown type cannot be published

GitHub | cancilla | 8 months ago
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    [Java topology] publish() throws IllegalStateException when using lambda expression

    GitHub | 8 months ago | cancilla
    java.lang.IllegalStateException: A TStream with a tuple type that contains a generic or unknown type cannot be published

    Root Cause Analysis

    1. java.lang.IllegalStateException

      A TStream with a tuple type that contains a generic or unknown type cannot be published

      at com.ibm.streamsx.topology.internal.core.StreamImpl.publish()
    2. com.ibm.streamsx
      StreamImpl.publish
      1. com.ibm.streamsx.topology.internal.core.StreamImpl.publish(StreamImpl.java:413)
      2. com.ibm.streamsx.topology.internal.core.StreamImpl.publish(StreamImpl.java:360)
      2 frames
    3. Unknown
      Main.main
      1. Main.main(Main.java:21)
      1 frame