Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14207#discussion_r71382426
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/catalog/Catalog.scala ---
@@ -223,6 +223,9 @@ abstract class Catalog {
* If this table is cached as an InMemoryRelation, drop the original
cached version and make the
* new version cached lazily.
*
+ * If the table's schema is inferred at runtime, infer the schema again
and update the schema
--- End diff --
@rxin @cloud-fan I see. Will make a change
FYI, this will change the existing external behavior.
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