Github user zhangminglei commented on a diff in the pull request: https://github.com/apache/flink/pull/4659#discussion_r139048412 --- Diff: flink-core/src/main/java/org/apache/flink/api/java/functions/KeySelector.java --- @@ -36,7 +37,7 @@ public interface KeySelector<IN, KEY> extends Function, Serializable { /** - * User-defined function that extracts the key from an arbitrary object. + * User-defined function that extracts the key from an deterministic object. --- End diff -- Okay. Thanks. I will correct it soon.
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