rdblue commented on a change in pull request #2496:
URL: https://github.com/apache/iceberg/pull/2496#discussion_r810407974
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File path: site/docs/spec.md
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@@ -159,6 +161,13 @@ A **`list`** is a collection of values with some element
type. The element field
A **`map`** is a collection of key-value pairs with a key type and a value
type. Both the key field and value field each have an integer id that is unique
in the table schema. Map keys are required and map values can be either
optional or required. Both map keys and map values may be any type, including
nested types.
+Iceberg supports default-value semantics for fields of nested types (i.e.,
struct, list and map). Specifically, a field
Review comment:
Yes, I just want to make sure that's the goal. No default elements,
key/value pairs, or custom lookup results (like `getOrDefault`). Just default
values for whole lists, like an empty map or empty list. Maybe a specific map
or list that is non-empty?
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