Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1255#discussion_r44257060
--- Diff:
flink-java/src/main/java/org/apache/flink/api/java/operators/PartitionOperator.java
---
@@ -148,9 +147,6 @@ else if (pKeys instanceof Keys.SelectorFunctionKeys) {
}
}
- else if (pMethod == PartitionMethod.RANGE) {
--- End diff --
I see your point. It's probably OK to leave out this check.
`sortPartition()` is doing the same check and would fail if the same
non-sortable key is used.
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