Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/6117#discussion_r30286528
--- Diff:
core/src/main/scala/org/apache/spark/deploy/master/MasterSource.scala ---
@@ -30,6 +30,11 @@ private[spark] class MasterSource(val master: Master)
extends Source {
override def getValue: Int = master.workers.size
})
+ //Gauge for alive worker numbers in cluster
+ metricRegistry.register(MetricRegistry.name("aliveWorkers"), new
Gauge[Int]{
+ override def getValue : Int =
master.workers.filter(_.state==WorkerState.ALIVE).size
--- End diff --
style is wrong, should be:
```
override def getValue: Int = master.workers.filter(_.state ==
WorkerState.ALIVE).size
```
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