rdblue commented on a change in pull request #2204:
URL: https://github.com/apache/iceberg/pull/2204#discussion_r572259656
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File path: core/src/main/java/org/apache/iceberg/SchemaUpdate.java
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@@ -138,12 +138,13 @@ private void internalAddColumn(String parent, String
name, boolean isOptional, T
parentId = parentField.fieldId();
Preconditions.checkArgument(!deletes.contains(parentId),
"Cannot add to a column that will be deleted: %s", parent);
- Preconditions.checkArgument(schema.findField(parent + "." + name) ==
null,
- "Cannot add column, name already exists: %s.%s", parent, name);
+ Preconditions.checkArgument(schema.findField(parent + "." + name) ==
null ||
Review comment:
I'd like to see `schema.findField(parent + "." + name)` factored out
into a variable so it isn't looked up twice.
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