RussellSpitzer commented on code in PR #8611:
URL: https://github.com/apache/iceberg/pull/8611#discussion_r1333258154
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format/spec.md:
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@@ -450,6 +450,48 @@ Notes:
2. For `float` and `double`, the value `-0.0` must precede `+0.0`, as in the
IEEE 754 `totalOrder` predicate. NaNs are not permitted as lower or upper
bounds.
3. If sort order ID is missing or unknown, then the order is assumed to be
unsorted. Only data files and equality delete files should be written with a
non-null order id. [Position deletes](#position-delete-files) are required to
be sorted by file and position, not a table order, and should set sort order id
to null. Readers must ignore sort order id for position delete files.
4. The following field ids are reserved on `data_file`: 141.
+5. For nested structures, the null counts are as following:
+ ##### Struct
+ ```
+ schema {
+ 1: nested_struct<2: int, 3: boolean>
+ }
+ ```
+ The following holds true:
+ ```
+ null null_value_counts={1: 1, 2: 0, 3: 0}
+ struct<1, True> null_value_counts={1: 0, 2: 1, 3: 0}
Review Comment:
Shouldn't this be all 0?
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