Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/699#discussion_r30710708
--- Diff:
flink-optimizer/src/test/java/org/apache/flink/optimizer/custompartition/CustomPartitioningGlobalOptimizationTest.java
---
@@ -57,8 +58,8 @@ public void testJoinReduceCombination() {
.withPartitioner(partitioner);
joined.groupBy(1).withPartitioner(partitioner)
- .reduceGroup(new
IdentityGroupReducerCombinable<Tuple3<Long,Long,Long>>())
- .print();
+ .reduceGroup(new
IdentityGroupReducer<Tuple3<Long,Long,Long>>())
--- End diff --
The semantics of the tests should not be changed. This needs to be changed
back to the original `IdentityGroupReducerCombinable`
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