Fabian, Does the above stack trace looks like a deadlock?
at
org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.getNextBufferOrEvent(SingleInputGate.java:539)
- locked <0x00000007baf84040> (a java.util.ArrayDeque)
at
org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.getNextBufferOrEvent(SingleInputGate.java:508)
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