Github user vanzin commented on a diff in the pull request: https://github.com/apache/spark/pull/1222#discussion_r18534494 --- Diff: core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala --- @@ -142,48 +151,56 @@ private[history] class FsHistoryProvider(conf: SparkConf) extends ApplicationHis * Tries to reuse as much of the data already in memory as possible, by not reading * applications that haven't been updated since last time the logs were checked. */ - private def checkForLogs() = { + private[history] def checkForLogs() = { lastLogCheckTimeMs = getMonotonicTimeMs() logDebug("Checking for logs. Time is now %d.".format(lastLogCheckTimeMs)) - try { - val logStatus = fs.listStatus(new Path(resolvedLogDir)) - val logDirs = if (logStatus != null) logStatus.filter(_.isDir).toSeq else Seq[FileStatus]() - // Load all new logs from the log directory. Only directories that have a modification time - // later than the last known log directory will be loaded. + def getModificationTime(fsEntry: FileStatus) = { + if (fsEntry.isDir) { + fs.listStatus(fsEntry.getPath).map(_.getModificationTime()).max + } else { + fsEntry.getModificationTime() + } + } + + try { var newLastModifiedTime = lastModifiedTime - val logInfos = logDirs - .filter { dir => - if (fs.isFile(new Path(dir.getPath(), EventLoggingListener.APPLICATION_COMPLETE))) { - val modTime = getModificationTime(dir) + val logInfos = fs.listStatus(new Path(logDir)) + .filter { entry => --- End diff -- That makes the alignment of flatMap / sortBy really weird. Do you have an example of what you have in mind so I can follow it? Others I have found follow this style.
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