Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/12166#discussion_r58582117
--- Diff: mllib/src/main/scala/org/apache/spark/ml/clustering/LDA.scala ---
@@ -619,6 +651,31 @@ class DistributedLDAModel private[ml] (
@Since("1.6.0")
lazy val logPrior: Double = oldDistributedModel.logPrior
+ private var _checkpointFiles: Array[String] =
oldDistributedModel.checkpointFiles
+
+ /**
+ * If using checkpointing and [[LDA.keepLastCheckpoint]] is set to true,
then there may be
+ * saved checkpoint files. This method is provided so that users can
manage those files.
+ * Note that removing the checkpoints can cause failures if a partition
is lost and is needed
+ * by certain [[DistributedLDAModel]] methods.
+ *
+ * @return Checkpoint files from training
+ */
+ @Since("2.0.0")
+ def getCheckpointFiles: Array[String] = _checkpointFiles
--- End diff --
I'd like to give users a way to clean up manually, but I'll mark it as
DeveloperApi.
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