Github user jinxing64 commented on a diff in the pull request:
https://github.com/apache/spark/pull/19330#discussion_r140627825
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -663,6 +663,18 @@ class CodegenContext
GitHub user jinxing64 opened a pull request:
https://github.com/apache/spark/pull/19330
Orderable MapType
## What changes were proposed in this pull request?
We can make MapType orderable, and thus usable in aggregates and joins.
## How was this patch tested?
