ssdong commented on a change in pull request #2784:
URL: https://github.com/apache/hudi/pull/2784#discussion_r611068273



##########
File path: 
hudi-common/src/test/java/org/apache/hudi/common/testutils/FileCreateUtils.java
##########
@@ -157,11 +157,19 @@ public static void createReplaceCommit(String basePath, 
String instantTime, Hood
   }
 
   public static void createRequestedReplaceCommit(String basePath, String 
instantTime, HoodieRequestedReplaceMetadata requestedReplaceMetadata) throws 
IOException {
-    createMetaFile(basePath, instantTime, 
HoodieTimeline.REQUESTED_REPLACE_COMMIT_EXTENSION, 
serializeRequestedReplaceMetadata(requestedReplaceMetadata).get());
+    if (null != requestedReplaceMetadata) {
+      createMetaFile(basePath, instantTime, 
HoodieTimeline.REQUESTED_REPLACE_COMMIT_EXTENSION, 
serializeRequestedReplaceMetadata(requestedReplaceMetadata).get());
+    } else {
+      createMetaFile(basePath, instantTime, 
HoodieTimeline.REQUESTED_REPLACE_COMMIT_EXTENSION, new byte[0]);
+    }
   }
 
-  public static void createInflightReplaceCommit(String basePath, String 
instantTime) throws IOException {
-    createMetaFile(basePath, instantTime, 
HoodieTimeline.INFLIGHT_REPLACE_COMMIT_EXTENSION);
+  public static void createInflightReplaceCommit(String basePath, String 
instantTime, HoodieCommitMetadata inflightReplaceMetadata) throws IOException {
+    if (inflightReplaceMetadata != null) {
+      createMetaFile(basePath, instantTime, 
HoodieTimeline.INFLIGHT_REPLACE_COMMIT_EXTENSION, 
inflightReplaceMetadata.toJsonString().getBytes(StandardCharsets.UTF_8));
+    } else {
+      createMetaFile(basePath, instantTime, 
HoodieTimeline.INFLIGHT_REPLACE_COMMIT_EXTENSION);
+    }

Review comment:
       Both requested and inflight commit files can be empty and non-empty 
under existing implementations so we wanna test them both in the unit tests. 




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