Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/11257#discussion_r53494416
--- Diff: core/src/main/scala/org/apache/spark/api/python/PythonRDD.scala
---
@@ -871,6 +874,44 @@ private class PythonAccumulatorParam(@transient
private val serverHost: String,
* write the data into disk after deserialization, then Python can read it
from disks.
*/
// scalastyle:off no.finalize
+
+/**
+ * Create a class that extends PhantomReference.
+ */
+private[spark] class FilePhantomReference(@transient var f: File, var q:
ReferenceQueue[File])
+ extends PhantomReference(f, q){
+
+ private def cleanup()
--- End diff --
who calls this method?
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