wgtmac commented on code in PR #16836:
URL: https://github.com/apache/iceberg/pull/16836#discussion_r3675847305


##########
format/expressions-spec.md:
##########
@@ -235,7 +235,7 @@ Note that `year`, `month`, and `hour` transforms produce 
ordinal values and not
 
 | Parameterized function name | Description                                    
                       | Source types                                           
                                      | Result type |
 
|-----------------------------|-----------------------------------------------------------------------|----------------------------------------------------------------------------------------------|-------------|
-| `bucket(N, value)`          | Hash of value, mod `N` (see [table spec 
details][bucket-ref])         | Any primitive except for `geometry`, 
`geography`, `variant`, `boolean`, `float`, or `double` | `int`       |
+| `bucket(N, value)`          | Hash of value, mod `N` (see [table spec 
details][bucket-ref])         | Any primitive except for `geometry`, 
`geography`, `boolean`, `float`, `double`, or `variant` | `int`       |

Review Comment:
   ```suggestion
   | `bucket(N, value)`          | Hash of value, mod `N` (see [table spec 
details][bucket-ref])         | Any primitive except for `geometry`, 
`geography`, `boolean`, `float`, or `double` | `int`       |
   ```



##########
format/expressions-spec.md:
##########
@@ -223,7 +223,7 @@ All partition transforms produce `null` for a `null` input 
value.
 
 | Function name     | Description                                              
    | Source types                                                         | 
Result type |
 
|-------------------|--------------------------------------------------------------|----------------------------------------------------------------------|-------------|
-| `identity(value)` | Source value, unmodified                                 
    | Any primitive except for `geometry`, `geography`, and `variant`      | 
Source type |
+| `identity(value)` | Source value, unmodified                                 
    | Any primitive except for `geometry` and `geography`. Nested types 
(`struct`, `list`, and `map`) and `variant` are not supported. | Source type |

Review Comment:
   ```suggestion
   | `identity(value)` | Source value, unmodified                               
      | Any primitive except for `geometry` and `geography` | Source type |
   ```



##########
format/spec.md:
##########
@@ -567,7 +567,7 @@ Partition field IDs must be reused if an existing partition 
spec contains an equ
 
 | Transform name    | Description                                              
    | Source types                                                              
                                | Result type |
 
|-------------------|--------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------|-------------|
-| **`identity`**    | Source value, unmodified                                 
    | Any except for `geometry`, `geography`, and `variant`                     
                                | Source type |
+| **`identity`**    | Source value, unmodified                                 
    | Any primitive except for `geometry` and `geography`. Nested types 
(`struct`, `list`, and `map`) and `variant` are not supported. | Source type |

Review Comment:
   ```suggestion
   | **`identity`**    | Source value, unmodified                               
      | Any primitive except for `geometry` and `geography` | Source type |
   ```



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