Github user jaceklaskowski commented on a diff in the pull request:
https://github.com/apache/spark/pull/22238#discussion_r213264912
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -868,7 +870,9 @@ object SQLConf {
.internal()
.doc(
"The class used to manage state data in stateful streaming
queries. This class must " +
- "be a subclass of StateStoreProvider, and must have a zero-arg
constructor.")
+ "be a subclass of StateStoreProvider, and must have a zero-arg
constructor. " +
+ "Note: For structured streaming, this configuration cannot be
changed between query " +
--- End diff --
s/cannot be/must not be/
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