Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/18430#discussion_r124752564
--- Diff:
core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala ---
@@ -321,7 +321,11 @@ private[history] class FsHistoryProvider(conf:
SparkConf, clock: Clock)
// scan for modified applications, replay and merge them
val logInfos: Seq[FileStatus] = statusList
.filter { entry =>
- val prevFileSize =
fileToAppInfo.get(entry.getPath()).map{_.fileSize}.getOrElse(0L)
+ var prevFileSize = 0L
+ val fileInfo = fileToAppInfo.get(entry.getPath())
--- End diff --
Simpler:
```
val fileInfo = fileToAppInfo.get(entry.getPath())
val prevFileSize = if (fileInfo != null) fileInfo.fileSize else 0L
```
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