RussellSpitzer commented on a change in pull request #3845:
URL: https://github.com/apache/iceberg/pull/3845#discussion_r778366763
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File path: api/src/main/java/org/apache/iceberg/PartitionSpec.java
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@@ -337,16 +337,22 @@ private void checkAndAddPartitionName(String name) {
}
private void checkAndAddPartitionName(String name, Integer sourceColumnId)
{
+ checkAndAddPartitionName(name, sourceColumnId, true);
+ }
+
+ private void checkAndAddPartitionName(String name, Integer sourceColumnId,
boolean checkConflict) {
Types.NestedField schemaField = schema.findField(name);
- if (sourceColumnId != null) {
- // for identity transform case we allow conflicts between partition
and schema field name as
- // long as they are sourced from the same schema field
- Preconditions.checkArgument(schemaField == null ||
schemaField.fieldId() == sourceColumnId,
- "Cannot create identity partition sourced from different field in
schema: %s", name);
- } else {
- // for all other transforms we don't allow conflicts between partition
name and schema field name
- Preconditions.checkArgument(schemaField == null,
- "Cannot create partition from name that exists in schema: %s",
name);
+ if (checkConflict) {
Review comment:
I wonder if `checkConflict` should just be a part of the builder? It
seems a little odd that just the identity method has this flag. Like maybe you
have something like
partitionSpec.builder().checkConflicts(false) ?
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