Github user andrewor14 commented on a diff in the pull request: https://github.com/apache/spark/pull/4525#discussion_r25490648 --- Diff: core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala --- @@ -187,47 +200,74 @@ private[history] class FsHistoryProvider(conf: SparkConf) extends ApplicationHis } .flatMap { entry => try { - Some(replay(entry, new ReplayListenerBus())) + Some((getModificationTime(entry).get, entry)) } catch { case e: Exception => logError(s"Failed to load application log data from $entry.", e) None } } - .sortWith(compareAppInfo) + .sortWith(_._1 >= _._1) + .map { case (_, file) => file } + + logInfos.sliding(20, 20).foreach { batch => + replayExecutor.submit(new Runnable { + override def run(): Unit = mergeApplicationListing(batch) + }) + } lastModifiedTime = newLastModifiedTime + } catch { + case e: Exception => logError("Exception in checking for event log updates", e) + } + } - // When there are new logs, merge the new list with the existing one, maintaining - // the expected ordering (descending end time). Maintaining the order is important - // to avoid having to sort the list every time there is a request for the log list. --- End diff -- please add back this comment
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