GitHub user rdblue opened a pull request:
https://github.com/apache/spark/pull/15062
SPARK-17424: Fix unsound substitution bug in ScalaReflection.
## What changes were proposed in this pull request?
This method gets a type's primary constructor and fills in type parameters
with concrete types. For example, `MapPartitions[T, U] -> MapPartitions[Int,
String]`. This Substitution fails when the actual type args are empty because
they are still unknown. Instead, when there are no resolved types to subsitute,
this returns the original args with unresolved type parameters.
## How was this patch tested?
This doesn't affect substitutions where the type args are determined. This
fixes our case where the actual type args are empty and our job runs
successfully.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rdblue/spark
SPARK-17424-fix-unsound-reflect-substitution
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15062.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #15062
----
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
