szehon-ho commented on code in PR #51506:
URL: https://github.com/apache/spark/pull/51506#discussion_r2214597949
##########
sql/catalyst/src/test/scala/org/apache/spark/sql/connector/catalog/InMemoryBaseTable.scala:
##########
@@ -571,6 +591,17 @@ abstract class InMemoryBaseTable(
override def reportDriverMetrics(): Array[CustomTaskMetric] = {
Array(new InMemoryCustomDriverTaskMetric(rows.size))
}
+
+ def mergeSchema(oldType: StructType, newType: StructType): StructType = {
+ val (oldFields, newFields) = (oldType.fields, newType.fields)
+
+ // this does not override the old field with the new field with same
name for now
+ val nameToFieldMap = oldFields.map (f => f.name -> f).toMap
+ val remainingNewFields = newFields.filterNot (f =>
nameToFieldMap.contains (f.name) )
Review Comment:
OK i added this support as well in InMemoryTable, thanks!
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