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Spec: Fix reserved field ID limit #16111

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Spec: Fix reserved field ID limit #16111

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2 changes: 1 addition & 1 deletion format/spec.md
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Expand Up @@ -375,7 +375,7 @@ Identifier fields may be nested in structs but cannot be nested within maps or l

#### Reserved Field IDs

Iceberg tables must not use field ids greater than 2147483447 (`Integer.MAX_VALUE - 200`). This id range is reserved for metadata columns that can be used in user data schemas, like the `_file` column that holds the file path in which a row was stored.
Iceberg tables must not use field ids greater than or equal to 2147483447 (`Integer.MAX_VALUE - 200`). This id range is reserved for metadata columns that can be used in user data schemas, like the `_file` column that holds the file path in which a row was stored.

The set of metadata columns is:

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