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[SPARK-27301][Dstream]Shorten the FileSystem cached life cycle to the cleanup method inner scope #24235

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[SPARK-27301][Dstream]Shorten the FileSystem cached life cycle to the cleanup method inner scope #24235

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2 changes: 1 addition & 1 deletion streaming/src/main/scala/org/apache/spark/streaming/dstream/DStreamCheckpointData.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,6 @@ class DStreamCheckpointData[T: ClassTag](dstream: DStream[T])
// in that batch's checkpoint data
@transient private var timeToOldestCheckpointFileTime = new HashMap[Time, Time]

@transient private var fileSystem: FileSystem = null
protected[streaming] def currentCheckpointFiles = data.asInstanceOf[HashMap[Time, String]]

/**
Expand Down Expand Up @@ -80,6 +79,7 @@ class DStreamCheckpointData[T: ClassTag](dstream: DStream[T])
// even after master fails, as the checkpoint data of `time` does not refer to those files
val filesToDelete = timeToCheckpointFile.filter(_._1 < lastCheckpointFileTime)
logDebug("Files to delete:\n" + filesToDelete.mkString(","))
var fileSystem: FileSystem = null
filesToDelete.foreach {
case (time, file) =>
try {
Expand Down