Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/3487#discussion_r104896041
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/functions/util/AbstractRuntimeUDFContext.java
---
@@ -97,10 +97,16 @@ public int getNumberOfParallelSubtasks() {
}
@Override
+ public int getMaxNumberOfParallelSubtasks() {
+ // Number of KeyGroups is same with max-parallelism currently.
+ return taskInfo.getNumberOfKeyGroups();
--- End diff --
what does this return for the batch API, which doesn't have key-groups?
(ideally it should ```getNumberOFParallelSubtasks()```.
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