Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/flink/pull/553#discussion_r27551487
--- Diff:
flink-runtime/src/main/scala/org/apache/flink/runtime/taskmanager/TaskManager.scala
---
@@ -129,6 +129,10 @@ class TaskManager(val connectionInfo:
InstanceConnectionInfo,
override def getValue: Double =
ManagementFactory.getOperatingSystemMXBean().getSystemLoadAverage()
})
+ metricRegistry.register("cpuLoad", new Gauge[Double] {
+ override def getValue: Double =
+
ManagementFactory.getOperatingSystemMXBean().asInstanceOf[com.sun.management.OperatingSystemMXBean].getProcessCpuLoad()
--- End diff --
This cast may fail on some JVM implementations. See
http://www.oracle.com/technetwork/java/faq-sun-packages-142232.html
Can you surround the metric registration by a try catch block and log a
warning in case the cast fails?
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