Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1874#discussion_r59524034
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/plan/rules/dataSet/DataSetUnionRule.scala
---
@@ -32,6 +32,13 @@ class DataSetUnionRule
"FlinkUnionRule")
{
+ /**
+ * Only translate UNION ALL
+ */
+ override def matches(call: RelOptRuleCall): Boolean = {
+ val union: LogicalUnion = call.rel(0).asInstanceOf[LogicalUnion]
+ union.all
+ }
def convert(rel: RelNode): RelNode = {
--- End diff --
Add a newline between the methods. I also looks like the indention of
{{convert}} is a bit messed up. Can you correct that as well?
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