aokolnychyi commented on a change in pull request #2984:
URL: https://github.com/apache/iceberg/pull/2984#discussion_r716840651
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File path: core/src/main/java/org/apache/iceberg/util/PartitionUtil.java
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@@ -51,6 +53,20 @@ private PartitionUtil() {
MetadataColumns.FILE_PATH.fieldId(),
convertConstant.apply(Types.StringType.get(), task.file().path()));
+ // add _spec
+ idToConstant.put(
+ MetadataColumns.SPEC.fieldId(),
+ convertConstant.apply(Types.IntegerType.get(), task.file().specId()));
+
+ // add _partition
+ if (partitionType.fields().isEmpty()) {
+ // use null as some query engines may not be able to handle empty structs
+ idToConstant.put(MetadataColumns.PARTITION_COLUMN_ID, null);
+ } else {
+ StructLike partition = Partitioning.reconcilePartition(partitionType,
spec, partitionData);
+ idToConstant.put(MetadataColumns.PARTITION_COLUMN_ID,
convertConstant.apply(partitionType, partition));
Review comment:
I switched to using projections.
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