Github user davidyan74 commented on a diff in the pull request:
https://github.com/apache/incubator-apex-core/pull/185#discussion_r47731190
--- Diff: api/src/main/java/com/datatorrent/api/Context.java ---
@@ -161,6 +161,13 @@
*/
Attribute<Class<?>> TUPLE_CLASS = new Attribute<>(new
Class2String<>());
+ /**
+ * Attribute of input port.
+ * This is a read-only attribute to query whether the input port is
connected to a DelayOperator
+ * This is for iterative processing.
+ */
+ Attribute<Boolean> IS_CONNECTED_TO_DELAY_OPERATOR = new
Attribute<>(false);
--- End diff --
I chose to use an attribute because it will be available in child container
(namely GenericNode.java). If there is a way to get to the InputPortMeta in
that code, I'd prefer to put it there but it seems that InputPortMeta is only
available in stram.
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