szehon-ho commented on code in PR #4812:
URL: https://github.com/apache/iceberg/pull/4812#discussion_r919473652
##########
core/src/main/java/org/apache/iceberg/io/DeleteSchemaUtil.java:
##########
@@ -20,13 +20,38 @@
package org.apache.iceberg.io;
import org.apache.iceberg.MetadataColumns;
+import org.apache.iceberg.Partitioning;
import org.apache.iceberg.Schema;
+import org.apache.iceberg.Table;
+import org.apache.iceberg.types.TypeUtil;
import org.apache.iceberg.types.Types;
public class DeleteSchemaUtil {
private DeleteSchemaUtil() {
}
+ public static Schema metadataTableSchema(Table table) {
+ return metadataTableSchema(table, Partitioning.partitionType(table));
+ }
+
+ public static Schema metadataTableSchema(Table table, Types.StructType
partitionType) {
+ Schema result = new Schema(
+ MetadataColumns.DELETE_FILE_PATH,
Review Comment:
One of the tricky things is to pick a column field id, because here it may
conflict with the user field id. (the "row" column of position deletes is a
struct that reflects the user schema). So I will still put these constants on
the class MetadataColumns, but as reserved columns instead of metadata columns.
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