Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/12247#discussion_r59256046
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/FileStreamSource.scala
---
@@ -67,12 +62,33 @@ class FileStreamSource(
}
/**
+ * Set the metadata path. This method should be called before using
[[FileStreamSource]].
+ */
+ def setMetadataPath(metadataPath: String): Unit = {
--- End diff --
Sure, but if you find yourself hacking around the fact that we don't know
some information at some point in the control flow and its making the
implementation a lot more complicated, then we need to rethink the control flow.
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