Guosmilesmile commented on code in PR #16724:
URL: https://github.com/apache/iceberg/pull/16724#discussion_r3410722004


##########
data/src/test/java/org/apache/iceberg/data/BaseFormatModelTests.java:
##########
@@ -1706,6 +1715,98 @@ void testDataWriterMetaMap(FileFormat fileFormat) throws 
IOException {
         });
   }
 
+  @ParameterizedTest
+  @FieldSource("FILE_FORMATS")
+  void testDataWriterEncryption(FileFormat fileFormat) throws IOException {
+    assumeSupports(fileFormat, FEATURE_ENCRYPTION);
+
+    EncryptionManager encryptionManager = 
EncryptionTestHelpers.createEncryptionManager();
+    EncryptingFileIO encryptingFileIO = EncryptingFileIO.combine(fileIO, 
encryptionManager);
+    EncryptedOutputFile encryptedOutputFile =
+        encryptingFileIO.newEncryptingOutputFile("test-file-" + 
UUID.randomUUID());
+
+    FileWriterBuilder<DataWriter<T>, ?> writerBuilder =
+        FormatModelRegistry.dataWriteBuilder(fileFormat, engineType(), 
encryptedOutputFile)
+            .keyMetadata(encryptedOutputFile.keyMetadata());

Review Comment:
   Thanks for the idea. I have add FEATURE_AES_STREAM_ENCRYPTION to parquet. 
But we have to call keyMetadata since reader need this information.



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