zhuzhurk 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_r246429640
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionVertex.java
##########
@@ -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:
A vertex `Input` is a bit different from its corresponding
`IntermediateResult` with `POINTWISE` edge. So we need the `inputEdges` info in
ExecutionVertex.
I change it a bit to be more concise here: An input is consumable when when
any partition in it is consumable. (whether a partition is consumable is
different for PIPELINED and BLOCKING results)
B.T.W I'm also thinking about a later improvement that we can decide whether
the input is consumable according to its completeness percentage. It's also a
configuration related to `inputEdges`.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
