Github user lianhuiwang commented on a diff in the pull request:
https://github.com/apache/spark/pull/10058#discussion_r46377835
--- Diff:
core/src/main/scala/org/apache/spark/status/api/v1/ExecutorListResource.scala
---
@@ -28,9 +28,11 @@ private[v1] class ExecutorListResource(ui: SparkUI) {
@GET
def executorList(): Seq[ExecutorSummary] = {
val listener = ui.executorsListener
- val storageStatusList = listener.storageStatusList
- (0 until storageStatusList.size).map { statusId =>
- ExecutorsPage.getExecInfo(listener, statusId)
+ listener.synchronized {
--- End diff --
Because ExecutorsPage.getExecInfo() use executorToTasksActive,
executorToTasksFailed of ExecutorsListener and SparkListenerBus thread also
change value of executorToTasksActive,executorToTasksFailed in onPostEvent() ,
we need to use synchronized there. It is better that synchronized is used in
ExecutorsPage.getExecInfo().
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