Github user DmytroShkvyra commented on a diff in the pull request:
https://github.com/apache/flink/pull/3673#discussion_r115727629
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/MapJoinLeftRunner.scala
---
@@ -31,7 +32,19 @@ class MapJoinLeftRunner[IN1, IN2, OUT](
override def flatMap(multiInput: IN1, out: Collector[OUT]): Unit = {
broadcastSet match {
case Some(singleInput) => function.join(multiInput, singleInput, out)
- case None =>
+ case None => {
--- End diff --
@fhueske, If I use your code in `MapJoinLeftRunner ` I get following
spooky error:
```
scala.MatchError: None (of class scala.None$)
at
org.apache.flink.table.runtime.MapJoinLeftRunner.flatMap(MapJoinLeftRunner.scala:34)
at
org.apache.flink.api.common.operators.base.FlatMapOperatorBase.executeOnCollections(FlatMapOperatorBase.java:73)
```
I have googled this issue and find out that
https://groups.google.com/forum/#!topic/akka-user/jvbbilXDKdA it could be
related to akka.
So, I left code in `MapJoinLeftRunner` as was
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