LantaoJin commented on a change in pull request #22874: [SPARK-25865][CORE] Add
GC information to ExecutorMetrics
URL: https://github.com/apache/spark/pull/22874#discussion_r250029543
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File path:
core/src/main/scala/org/apache/spark/metrics/ExecutorMetricType.scala
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@@ -135,19 +135,17 @@ case object GarbageCollectionMetrics extends
ExecutorMetricType with Logging {
override private[spark] def getMetricValues(memoryManager: MemoryManager):
Array[Long] = {
val gcMetrics = new Array[Long](names.length) // minorCount, minorTime,
majorCount, majorTime
- if (SparkEnv.get.conf.get(config.EVENT_LOG_GC_METRICS)) {
ManagementFactory.getGarbageCollectorMXBeans.asScala.foreach { mxBean =>
- if (youngGenerationGarbageCollector.contains(mxBean.getName)) {
- gcMetrics(0) = mxBean.getCollectionCount
- gcMetrics(1) = mxBean.getCollectionTime
- } else if (oldGenerationGarbageCollector.contains(mxBean.getName)) {
- gcMetrics(2) = mxBean.getCollectionCount
- gcMetrics(3) = mxBean.getCollectionTime
- } else {
- logDebug(s"${mxBean.getName} is an unsupported garbage collector." +
- s"Add it to
${config.EVENT_LOG_GC_METRICS_YOUNG_GENERATION_GARBAGE_COLLECTORS} " +
- s"or
${config.EVENT_LOG_GC_METRICS_OLD_GENERATION_GARBAGE_COLLECTORS} to enable.")
- }
+ if (youngGenerationGarbageCollector.contains(mxBean.getName)) {
+ gcMetrics(0) = mxBean.getCollectionCount
Review comment:
AFAIK, one collector per generation is supported only.
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