[GitHub] tillrohrmann commented on a change in pull request #7255: [FLINK-10945] Use InputDependencyConstraint to avoid resource dead…

[GitBox <gi...@apache.org>]

tillrohrmann commented on a change in pull request #7255: [FLINK-10945] Use InputDependencyConstraint to avoid resource dead…
URL: https://github.com/apache/flink/pull/7255#discussion_r246052711
 
 

 ##########
 File path: flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionVertex.java
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 @@ -726,6 +730,41 @@ void sendPartitionInfos() {
 		}
 	}
 
+	/**
+	 * Check whether the InputDependencyConstraint is satisfied for this vertex.
+	 *
+	 * @return whether the input constraint is satisfied
+	 */
+	public boolean checkInputDependencyConstraints() {
+		if (getExecutionGraph().getInputDependencyConstraint() == InputDependencyConstraint.ANY) {
+			// InputDependencyConstraint == ANY
+			return IntStream.range(0, inputEdges.length).anyMatch(this::isInputConsumable);
+		} else {
+			// InputDependencyConstraint == ALL
+			return IntStream.range(0, inputEdges.length).allMatch(this::isInputConsumable);
+		}
+	}
+
+	/**
+	 * An input is consumable when
+	 * 1. the source result is PIPELINED and one of the result partition has produced data.
+	 * 2. the source result is BLOCKING and is FINISHED(all partitions are FINISHED).
+	 *
+	 * @return whether the input is consumable
+	 */
+	public boolean isInputConsumable(int inputNumber) {
 
 Review comment:
   I think this method should be moved into the `IntermediateResult`.

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