Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/14969#discussion_r78357482
--- Diff: core/src/main/scala/org/apache/spark/ui/exec/ExecutorsTab.scala
---
@@ -38,47 +37,68 @@ private[ui] class ExecutorsTab(parent: SparkUI) extends
SparkUITab(parent, "exec
}
}
+private[ui] case class ExecutorTaskSummary(
+ var executorId: String,
+ var totalCores: Int = 0,
+ var tasksMax: Int = 0,
+ var tasksActive: Int = 0,
+ var tasksFailed: Int = 0,
+ var tasksComplete: Int = 0,
+ var duration: Long = 0L,
+ var jvmGCTime: Long = 0L,
+ var inputBytes: Long = 0L,
+ var inputRecords: Long = 0L,
+ var outputBytes: Long = 0L,
+ var outputRecords: Long = 0L,
+ var shuffleRead: Long = 0L,
+ var shuffleWrite: Long = 0L,
+ var executorLogs: Map[String, String] = Map.empty,
+ var isAlive: Boolean = true
+)
+
/**
* :: DeveloperApi ::
* A SparkListener that prepares information to be displayed on the
ExecutorsTab
*/
@DeveloperApi
class ExecutorsListener(storageStatusListener: StorageStatusListener,
conf: SparkConf)
extends SparkListener {
- val executorToTotalCores = HashMap[String, Int]()
- val executorToTasksMax = HashMap[String, Int]()
- val executorToTasksActive = HashMap[String, Int]()
- val executorToTasksComplete = HashMap[String, Int]()
- val executorToTasksFailed = HashMap[String, Int]()
- val executorToDuration = HashMap[String, Long]()
- val executorToJvmGCTime = HashMap[String, Long]()
- val executorToInputBytes = HashMap[String, Long]()
- val executorToInputRecords = HashMap[String, Long]()
- val executorToOutputBytes = HashMap[String, Long]()
- val executorToOutputRecords = HashMap[String, Long]()
- val executorToShuffleRead = HashMap[String, Long]()
- val executorToShuffleWrite = HashMap[String, Long]()
- val executorToLogUrls = HashMap[String, Map[String, String]]()
- val executorIdToData = HashMap[String, ExecutorUIData]()
+ var executorToTaskSummary = LinkedHashMap[String, ExecutorTaskSummary]()
+ var executorEvents = new ListBuffer[SparkListenerEvent]()
+
+ private val maxTimelineExecutors =
conf.getInt("spark.ui.timeline.executors.maximum", 1000)
+ private val retainedDeadExecutors =
conf.getInt("spark.ui.retainedDeadExecutors", 100)
+ private var deadExecutorCount = 0
--- End diff --
Yeah I know, but it's not necessary. You can compute this value when
needed, and it's so rarely needed (only on executor added/removed?) that it's
not expensive. Otherwise there's a new class of bug that can crop up if these
get out of sync.
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