Github user squito commented on a diff in the pull request: https://github.com/apache/spark/pull/18887#discussion_r133512286 --- Diff: core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala --- @@ -316,25 +350,22 @@ private[history] class FsHistoryProvider(conf: SparkConf, clock: Clock) try { val newLastScanTime = getNewLastScanTime() logDebug(s"Scanning $logDir with lastScanTime==$lastScanTime") - val statusList = Option(fs.listStatus(new Path(logDir))).map(_.toSeq) - .getOrElse(Seq.empty[FileStatus]) + val statusList = Option(fs.listStatus(new Path(logDir))).map(_.toSeq).getOrElse(Nil) // scan for modified applications, replay and merge them - val logInfos: Seq[FileStatus] = statusList + val logInfos = statusList .filter { entry => - val fileInfo = fileToAppInfo.get(entry.getPath()) - val prevFileSize = if (fileInfo != null) fileInfo.fileSize else 0L !entry.isDirectory() && // FsHistoryProvider generates a hidden file which can't be read. Accidentally // reading a garbage file is safe, but we would log an error which can be scary to // the end-user. !entry.getPath().getName().startsWith(".") && - prevFileSize < entry.getLen() && - SparkHadoopUtil.get.checkAccessPermission(entry, FsAction.READ) + SparkHadoopUtil.get.checkAccessPermission(entry, FsAction.READ) && + recordedFileSize(entry.getPath()) < entry.getLen() } .flatMap { entry => Some(entry) } --- End diff -- realize this isn't your change, but what is the point of this? isn't it a no-op?
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