Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/11636#discussion_r56540019
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -199,7 +210,8 @@ class CodegenContext {
case StringType => s"$input.getUTF8String($ordinal)"
case BinaryType => s"$input.getBinary($ordinal)"
case CalendarIntervalType => s"$input.getInterval($ordinal)"
- case t: StructType => s"$input.getStruct($ordinal, ${t.size})"
+ case t: StructType => if (!isColumnarType(input)) {
s"$input.getStruct($ordinal, ${t.size})" }
--- End diff --
Right now, the parquet reader does not support nested types (Array, Map,
Struct), it's fine to not have this special case in this PR.
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