Github user jerryshao commented on a diff in the pull request: https://github.com/apache/spark/pull/14617#discussion_r106838695 --- Diff: core/src/main/scala/org/apache/spark/storage/BlockManagerSource.scala --- @@ -26,35 +26,39 @@ private[spark] class BlockManagerSource(val blockManager: BlockManager) override val metricRegistry = new MetricRegistry() override val sourceName = "BlockManager" - metricRegistry.register(MetricRegistry.name("memory", "maxMem_MB"), new Gauge[Long] { - override def getValue: Long = { - val storageStatusList = blockManager.master.getStorageStatus - val maxMem = storageStatusList.map(_.maxMem).sum - maxMem / 1024 / 1024 - } - }) - - metricRegistry.register(MetricRegistry.name("memory", "remainingMem_MB"), new Gauge[Long] { - override def getValue: Long = { - val storageStatusList = blockManager.master.getStorageStatus - val remainingMem = storageStatusList.map(_.memRemaining).sum - remainingMem / 1024 / 1024 - } - }) - - metricRegistry.register(MetricRegistry.name("memory", "memUsed_MB"), new Gauge[Long] { - override def getValue: Long = { - val storageStatusList = blockManager.master.getStorageStatus - val memUsed = storageStatusList.map(_.memUsed).sum - memUsed / 1024 / 1024 - } - }) - - metricRegistry.register(MetricRegistry.name("disk", "diskSpaceUsed_MB"), new Gauge[Long] { - override def getValue: Long = { - val storageStatusList = blockManager.master.getStorageStatus - val diskSpaceUsed = storageStatusList.map(_.diskUsed).sum - diskSpaceUsed / 1024 / 1024 - } - }) + private def registerGauge[T](name: String, f: BlockManagerMaster => T): Unit = { + metricRegistry.register(name, new Gauge[T] { + override def getValue: T = f(blockManager.master) + }) + } + + registerGauge(MetricRegistry.name("memory", "maxMem_MB"), + _.getStorageStatus.map(_.maxMem).sum / 1024 / 1024) --- End diff -- Thanks, I will change it.
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