Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4435#discussion_r28732087
--- Diff:
core/src/main/scala/org/apache/spark/deploy/history/HistoryServer.scala ---
@@ -149,7 +159,13 @@ class HistoryServer(
*
* @return List of all known applications.
*/
- def getApplicationList(): Iterable[ApplicationHistoryInfo] =
provider.getListing()
+ def getApplicationList(): Iterable[ApplicationHistoryInfo] = {
+ provider.getListing()
+ }
+
+ def getApplicationInfoList: Seq[ApplicationInfo] = {
+ getApplicationList().map {
ApplicationsListResource.appHistoryInfoToPublicAppInfo }.toSeq
--- End diff --
Is this transformation lazy? Otherwise it can cause memory usage to shoot
up considerably when this method is called (which can happen from multiple
concurrent user requests).
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