stevenzwu commented on code in PR #13310:
URL: https://github.com/apache/iceberg/pull/13310#discussion_r2198398116
##########
spark/v4.0/spark/src/main/java/org/apache/iceberg/spark/source/SparkTable.java:
##########
@@ -260,18 +260,52 @@ public MetadataColumn[] metadataColumns() {
DataType sparkPartitionType =
SparkSchemaUtil.convert(Partitioning.partitionType(table()));
ImmutableList.Builder<SparkMetadataColumn> metadataColumns =
ImmutableList.builder();
metadataColumns.add(
- new SparkMetadataColumn(MetadataColumns.SPEC_ID.name(),
DataTypes.IntegerType, true),
- new SparkMetadataColumn(MetadataColumns.PARTITION_COLUMN_NAME,
sparkPartitionType, true),
- new SparkMetadataColumn(MetadataColumns.FILE_PATH.name(),
DataTypes.StringType, false),
- new SparkMetadataColumn(MetadataColumns.ROW_POSITION.name(),
DataTypes.LongType, false),
- new SparkMetadataColumn(MetadataColumns.IS_DELETED.name(),
DataTypes.BooleanType, false));
-
- if (TableUtil.formatVersion(table()) >= 3) {
+ SparkMetadataColumn.builder()
+ .name(MetadataColumns.SPEC_ID.name())
+ .dataType(DataTypes.IntegerType)
+ .withNullability(true)
+ .build(),
+ SparkMetadataColumn.builder()
+ .name(MetadataColumns.PARTITION_COLUMN_NAME)
+ .dataType(sparkPartitionType)
+ .withNullability(true)
+ .build(),
+ SparkMetadataColumn.builder()
+ .name(MetadataColumns.FILE_PATH.name())
+ .dataType(DataTypes.StringType)
+ .withNullability(false)
+ .build(),
+ SparkMetadataColumn.builder()
+ .name(MetadataColumns.ROW_POSITION.name())
+ .dataType(DataTypes.LongType)
+ .withNullability(false)
+ .build(),
+ SparkMetadataColumn.builder()
+ .name(MetadataColumns.IS_DELETED.name())
+ .dataType(DataTypes.BooleanType)
+ .withNullability(false)
+ .build());
+
+ if (TableUtil.supportsRowLineage(icebergTable)) {
metadataColumns.add(
- new SparkMetadataColumn(MetadataColumns.ROW_ID.name(),
DataTypes.LongType, true));
+ SparkMetadataColumn.builder()
+ .name(MetadataColumns.ROW_ID.name())
+ .dataType(DataTypes.LongType)
+ .withNullability(true)
+ .preserveOnReinsert(true)
+ .preserveOnUpdate(true)
+ .preserveOnDelete(false)
+ .build());
+
metadataColumns.add(
- new SparkMetadataColumn(
- MetadataColumns.LAST_UPDATED_SEQUENCE_NUMBER.name(),
DataTypes.LongType, true));
+ SparkMetadataColumn.builder()
+ .name(MetadataColumns.LAST_UPDATED_SEQUENCE_NUMBER.name())
+ .dataType(DataTypes.LongType)
+ .withNullability(true)
+ .preserveOnReinsert(false)
Review Comment:
ok. thanks for expplaining.
`Reinsert` is the 2nd part of `update` operation. I thought compaction is an
update operation, which is wrong.
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