[jira] [Created] (FLINK-8737) Creating a union of UnionGate instances will fail with UnsupportedOperationException when retrieving buffers

[Shang Yuanchun (Jira)]

Nico Kruber created FLINK-8737:
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             Summary: Creating a union of UnionGate instances will fail with UnsupportedOperationException when retrieving buffers
                 Key: FLINK-8737
                 URL: https://issues.apache.org/jira/browse/FLINK-8737
             Project: Flink
          Issue Type: Sub-task
          Components: Network
            Reporter: Nico Kruber
             Fix For: 1.5.0


FLINK-8589 introduced a new polling method but did not implement {{UnionInputGate#pollNextBufferOrEvent()}}. This prevents UnionGate instances from containing a UnionGate instance which is explicitly allowed by its documentation and interface.



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