zhuzhurk commented on a change in pull request #13958:
URL: https://github.com/apache/flink/pull/13958#discussion_r519133383
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/adapter/DefaultExecutionTopology.java
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@@ -201,4 +195,32 @@ private static void connectVerticesToConsumedPartitions(
}
}
}
+
+ /**
+ * Co-location constraints are only used for iteration head and tail.
+ * A paired head and tail needs to be in the same pipelined region so
+ * that they can be restarted together.
+ */
+ private void ensureCoLocatedVerticesInSameRegion() {
+ final Map<CoLocationConstraint,
DefaultSchedulingPipelinedRegion> constraintToRegion = new IdentityHashMap<>();
Review comment:
done.
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