chenjunjiedada commented on a change in pull request #2216:
URL: https://github.com/apache/iceberg/pull/2216#discussion_r590053925



##########
File path: core/src/main/java/org/apache/iceberg/BaseRewriteFiles.java
##########
@@ -57,4 +57,22 @@ public RewriteFiles rewriteFiles(Set<DataFile> 
filesToDelete, Set<DataFile> file
 
     return this;
   }
+
+  @Override
+  public RewriteFiles rewriteDeletes(Set<DeleteFile> deletesToDelete, 
Set<DeleteFile> deletesToAdd) {
+    Preconditions.checkArgument(deletesToDelete != null && 
!deletesToDelete.isEmpty(),
+        "Files to delete cannot be null or empty");
+    Preconditions.checkArgument(deletesToAdd != null && 
!deletesToAdd.isEmpty(),

Review comment:
       I understand your concern. The check is used to discard the invalid 
rewrite, we don't want to continue the rewrite if there is no position delete 
produced. Don't we?




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