Github user davidyan74 commented on a diff in the pull request:
https://github.com/apache/incubator-apex-core/pull/185#discussion_r47725499
--- Diff:
engine/src/main/java/com/datatorrent/stram/plan/logical/LogicalPlan.java ---
@@ -1613,6 +1636,37 @@ else if (stack.contains(successor)) {
}
}
+ public void findInvalidDelays(OperatorMeta om, List<List<String>>
invalidDelays)
+ {
+ stack.push(om);
+
+ // depth first successors traversal
+ boolean isDelayOperator = om.getOperator() instanceof
Operator.DelayOperator;
+ if (isDelayOperator) {
+ if (om.getValue(OperatorContext.APPLICATION_WINDOW_COUNT) != 1) {
+ LOG.warn("detected DelayOperator having APPLICATION_WINDOW_COUNT
not equal to 1");
--- End diff --
My understanding is that the APPLICATION_WINDOW_COUNT of delay operator
should be independent of the downstream. Can you shed some lights on this since
you have implemented sliding window and probably have better understanding than
me in terms of windowing.
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