Github user DoingDone9 commented on the pull request:
https://github.com/apache/spark/pull/9951#issuecomment-159525672
```
shutdownDeletePaths.foreach { dirPath =>
try {
logInfo("Deleting directory " + dirPath)
Utils.deleteRecursively(new File(dirPath))
} catch {
case e: Exception => logError(s"Exception while deleting Spark temp
dir: $dirPath", e)
}
}
```
`Utils.deleteRecursively(new File(dirPath) ` call
`ShutdownHookManager.removeShutdownDeleteDir(file)`
```
def deleteRecursively(file: File) {
...
ShutdownHookManager.removeShutdownDeleteDir(file)
...
}
```
`ShutdownHookManager.removeShutdownDeleteDir(file) `will deleting elements
of shutdownDeletePaths
```
def removeShutdownDeleteDir(file: File) {
val absolutePath = file.getAbsolutePath()
shutdownDeletePaths.synchronized {
shutdownDeletePaths.remove(absolutePath)
}
}
```
@rxin
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