fapaul commented on code in PR #19405:
URL: https://github.com/apache/flink/pull/19405#discussion_r854259322
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flink-end-to-end-tests/flink-end-to-end-tests-elasticsearch-common/src/main/java/org/apache/flink/streaming/tests/KeyValue.java:
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@@ -0,0 +1,74 @@
+package org.apache.flink.streaming.tests;
+
+import org.apache.flink.util.StringUtils;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+/** A {@link Comparable} holder for key-value pairs. */
+public class KeyValue<K extends Comparable<? super K>, V extends Comparable<?
super V>>
+ implements Comparable<KeyValue<K, V>>, Serializable {
+
+ private static final long serialVersionUID = 1L;
+
+ /** The key of the key-value pair. */
+ public K key;
+ /** The value the key-value pair. */
+ public V value;
+
+ /** Creates a new key-value pair where all fields are null. */
+ public KeyValue() {}
+
+ private KeyValue(K key, V value) {
+ this.key = key;
+ this.value = value;
+ }
+
+ @Override
+ public int compareTo(KeyValue<K, V> other) {
Review Comment:
Let's keep like it currently is.
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