singhpk234 commented on code in PR #11346:
URL: https://github.com/apache/iceberg/pull/11346#discussion_r1806695970


##########
orc/src/main/java/org/apache/iceberg/data/orc/GenericOrcWriters.java:
##########
@@ -101,8 +101,8 @@ public static OrcValueWriter<ByteBuffer> byteBuffers() {
     return ByteBufferWriter.INSTANCE;
   }
 
-  public static OrcValueWriter<UUID> uuids() {
-    return UUIDWriter.INSTANCE;
+  public static OrcValueWriter<ByteBuffer> uuids() {
+    return ByteBufferWriter.INSTANCE;

Review Comment:
   Need to revisit this.



##########
kafka-connect/kafka-connect/src/test/java/org/apache/iceberg/connect/data/RecordConverterTest.java:
##########
@@ -921,11 +929,24 @@ private void assertRecordValues(Record record) {
     assertThat(rec.getField("dec")).isEqualTo(DEC_VAL);
     assertThat(rec.getField("s")).isEqualTo(STR_VAL);
     assertThat(rec.getField("b")).isEqualTo(true);
-    assertThat(rec.getField("u")).isEqualTo(UUID_VAL);
-    assertThat(rec.getField("f")).isEqualTo(BYTES_VAL);
+    assertThat(rec.getField("u")).isEqualTo(UUIDUtil.convert(UUID_VAL));
+    assertThat(rec.getField("f")).isEqualTo(BYTES_VAL.array());
     assertThat(rec.getField("bi")).isEqualTo(BYTES_VAL);
     assertThat(rec.getField("li")).isEqualTo(LIST_VAL);
     assertThat(rec.getField("ma")).isEqualTo(MAP_VAL);
+
+    // check by actually writing it
+    for (String format : new String[] {"parquet"}) {
+      IcebergSinkConfig config = mock(IcebergSinkConfig.class);
+      when(config.tableConfig(any())).thenReturn(mock(TableSinkConfig.class));
+      
when(config.writeProps()).thenReturn(ImmutableMap.of("write.format.default", 
format));
+      WriteResult result = writeTest(ImmutableList.of(rec), config, 
UnpartitionedWriter.class);
+
+      assertThat(result.dataFiles()).hasSize(1);
+      assertThat(result.dataFiles())
+          .allMatch(file -> file.format() == FileFormat.fromString(format));
+      assertThat(result.deleteFiles()).hasSize(0);

Review Comment:
   This tests fails before the fix for parquet and aparently fixing parquet it 
made ORC fail due to UUID handling differently



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