Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/14580
None of us is right. : (
```isnotnull(coalesce(b#227, c#238))``` does not filter out `NULL`!!!
Thus, the right fix is to remove the second condition.
```Scala
filter.constraints.filter(_.isInstanceOf[IsNotNull]).exists(expr =>
join.left.outputSet.intersect(expr.references).nonEmpty)
```
and
```Scala
filter.constraints.filter(_.isInstanceOf[IsNotNull])
.exists(expr => join.right.outputSet.intersect(expr.references).nonEmpty
```
---
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
