dramaticlly commented on code in PR #10547:
URL: https://github.com/apache/iceberg/pull/10547#discussion_r1663244200
##########
spark/v3.5/spark/src/main/java/org/apache/iceberg/spark/source/SparkScanBuilder.java:
##########
@@ -375,30 +374,33 @@ private Schema schemaWithMetadataColumns() {
.distinct()
.map(name -> MetadataColumns.metadataColumn(table, name))
.collect(Collectors.toList());
- // only calculate potential column id collision if _partition was requested
- Schema metadataSchema =
- metadataFields.isEmpty() ||
!metaColumns.contains(MetadataColumns.PARTITION_COLUMN_NAME)
- ? new Schema(metadataFields)
- : deduplicateSchemaIds(metadataFields);
+ Schema metadataSchema = calculateMetadataSchema(metadataFields);
// schema or rows returned by readers
return TypeUtil.join(schema, metadataSchema);
}
- private Schema deduplicateSchemaIds(List<Types.NestedField>
metaColumnFields) {
- Map<Integer, Types.NestedField> indexedMetadataColumnFields =
- TypeUtil.indexById(Types.StructType.of(metaColumnFields));
+ private Schema calculateMetadataSchema(List<Types.NestedField>
metaColumnFields) {
+ // only calculate potential column id collision if _partition was requested
+ boolean requireDeduplicateSchemaIds =
Review Comment:
sounds good!
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