tgravescs commented on a change in pull request #23614: 
[SPARK-26689][CORE]Support blacklisting bad disk directory and retry in 
DiskBlockManager
URL: https://github.com/apache/spark/pull/23614#discussion_r255956100
 
 

 ##########
 File path: core/src/main/scala/org/apache/spark/storage/DiskBlockManager.scala
 ##########
 @@ -48,32 +56,74 @@ private[spark] class DiskBlockManager(conf: SparkConf, 
deleteFilesOnStop: Boolea
   // of subDirs(i) is protected by the lock of subDirs(i)
   private val subDirs = Array.fill(localDirs.length)(new 
Array[File](subDirsPerLocalDir))
 
+  private[spark] val badDirs = ArrayBuffer[File]()
 
 Review comment:
   how about call blacklistedDirs to keep naming consistent

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