Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/2363#discussion_r75354845
--- Diff:
flink-runtime/src/main/scala/org/apache/flink/runtime/messages/Messages.scala
---
@@ -47,4 +47,21 @@ object Messages {
* @return The Acknowledge case object instance.
*/
def getAcknowledge(): Acknowledge.type = Acknowledge
+
+ /**
+ * Signals that the receiver (JobManager/TaskManager) should transmit a
dump of the
+ * registered metrics.
+ *
+ * This message may be send regularly by the WebInterface.
+ */
+ case object MetricRequest
+
+ /**
+ * Accessor for the case object instance, to simplify Java
interoperability.
+ *
+ * @return The MetricRequest case object instance.
+ */
+ def getRequestMetrics(): AnyRef = {
--- End diff --
sure
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