danielhumanmod commented on code in PR #518:
URL: https://github.com/apache/incubator-xtable/pull/518#discussion_r1722968600
##########
xtable-core/src/test/java/org/apache/xtable/iceberg/TestIcebergDataHelper.java:
##########
@@ -99,7 +99,9 @@ public class TestIcebergDataHelper {
NestedField.optional(
28, "timestamp_micros_nullable_field",
Types.TimestampType.withZone()),
NestedField.optional(
- 30, "timestamp_local_micros_nullable_field",
Types.TimestampType.withoutZone()));
+ 30, "timestamp_local_micros_nullable_field",
Types.TimestampType.withoutZone()),
+ NestedField.optional(33, "uuid_field", Types.UUIDType.get())
Review Comment:
I found relevant context in Spark
https://github.com/sunchao/spark/commit/feec7911b48eb80f2c1c896e13916a01ac7bb359.
Based on the code in the
[convertPrimitiveField](https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetSchemaConverter.scala#L299-L305)
method, it seems that the Spark cannot read FIXED_LEN_BYTE_ARRAY fields with a
UUID logical type annotation in Parquet.
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