xushiyan commented on a change in pull request #4752:
URL: https://github.com/apache/hudi/pull/4752#discussion_r802396594



##########
File path: 
hudi-utilities/src/test/java/org/apache/hudi/utilities/testutils/UtilitiesTestBase.java
##########
@@ -410,6 +411,16 @@ public static String toJsonString(HoodieRecord hr) {
       return 
records.stream().map(Helpers::toJsonString).toArray(String[]::new);
     }
 
+    public static Tuple2<String, String>[] 
jsonifyRecordsByPartitions(List<HoodieRecord> records, int partitions) {

Review comment:
        java class `org.apache.hudi.common.util.collection.Pair` is preferred 
here over Tuple2

##########
File path: 
hudi-utilities/src/test/java/org/apache/hudi/utilities/testutils/UtilitiesTestBase.java
##########
@@ -410,6 +411,16 @@ public static String toJsonString(HoodieRecord hr) {
       return 
records.stream().map(Helpers::toJsonString).toArray(String[]::new);
     }
 
+    public static Tuple2<String, String>[] 
jsonifyRecordsByPartitions(List<HoodieRecord> records, int partitions) {
+      Tuple2<String, String>[] data = new Tuple2[records.size()];
+      for (int i = 0; i < records.size(); i++) {
+        int key = i % partitions;

Review comment:
       shouldn't it be better with 
org.apache.hudi.common.model.HoodieKey#recordKey from each HoodieRecord ?




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