Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/13335#discussion_r64967228
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/util/ContinuousQueryListener.scala
---
@@ -65,11 +65,33 @@ object ContinuousQueryListener {
trait Event
/** Event representing the start of a query */
- class QueryStarted private[sql](val query: ContinuousQuery) extends Event
+ class QueryStarted private[sql](val queryInfo: ContinuousQueryInfo)
extends Event
/** Event representing any progress updates in a query */
- class QueryProgress private[sql](val query: ContinuousQuery) extends
Event
+ class QueryProgress private[sql](val queryInfo: ContinuousQueryInfo)
extends Event
- /** Event representing that termination of a query */
- class QueryTerminated private[sql](val query: ContinuousQuery) extends
Event
+ /**
+ * Event representing that termination of a query
+ *
+ * @param queryInfo
+ * @param exception The excpetion information of the [[ContinuousQuery]]
if any. Otherwise, it
+ * will be `None`.
+ */
+ class QueryTerminated private[sql](
+ val queryInfo: ContinuousQueryInfo,
+ val exception: Option[String]) extends Event
}
+
+/**
+ * :: Experimental ::
+ * A class that contains information about [[ContinuousQuery]].
+ *
+ * @param name The [[ContinuousQuery]] name
+ * @param sourceStatuses The current statuses of the [[ContinuousQuery]]'s
sources.
+ * @param sinkStatus The current status of the [[ContinuousQuery]]'s sink.
+ */
+@Experimental
+class ContinuousQueryInfo private[sql](
--- End diff --
Mostly I'm thinking you will want some way to go from this to the actual
query object, but maybe thats not a requirement (or could still be added later).
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