aihuaxu commented on code in PR #10831:
URL: https://github.com/apache/iceberg/pull/10831#discussion_r1829687763
##########
format/spec.md:
##########
@@ -1287,6 +1307,7 @@ Types are serialized according to this table:
|**`struct`**|`JSON object: {`<br /> `"type": "struct",`<br
/> `"fields": [ {`<br /> `"id": <field id
int>,`<br /> `"name": <name string>,`<br
/> `"required": <boolean>,`<br
/> `"type": <type JSON>,`<br
/> `"doc": <comment string>,`<br
/> `"initial-default": <JSON encoding of default
value>,`<br /> `"write-default": <JSON encoding of
default value>`<br /> `}, ...`<br /> `]
}`|`{`<br /> `"type": "struct",`<br /> `"fields": [ {`<br
/> `"id": 1,`<br /> `"name":
"id",`<br /> `"required": true,`<br
/> `"type": "uuid",`<br
/> `"initial-default":
"0db3e2a8-9d1d-42b9-aa7b-74ebe558dceb",`<br
/> `"write-default": "ec5911be
-b0a7-458c-8438-c9a3e53cffae"`<br /> `}, {`<br
/> `"id": 2,`<br /> `"name":
"data",`<br /> `"required": false,`<br
/> `"type": {`<br
/> `"type": "list",`<br
/> `...`<br /> `}`<br
/> `} ]`<br />`}`|
|**`list`**|`JSON object: {`<br /> `"type": "list",`<br
/> `"element-id": <id int>,`<br /> `"element-required":
<bool>`<br /> `"element": <type JSON>`<br />`}`|`{`<br
/> `"type": "list",`<br /> `"element-id": 3,`<br
/> `"element-required": true,`<br /> `"element":
"string"`<br />`}`|
|**`map`**|`JSON object: {`<br /> `"type": "map",`<br
/> `"key-id": <key id int>,`<br /> `"key": <type
JSON>,`<br /> `"value-id": <val id int>,`<br
/> `"value-required": <bool>`<br /> `"value": <type
JSON>`<br />`}`|`{`<br /> `"type": "map",`<br
/> `"key-id": 4,`<br /> `"key": "string",`<br
/> `"value-id": 5,`<br /> `"value-required": false,`<br
/> `"value": "double"`<br />`}`|
+| **`variant`**| `JSON string: "variant"`|`"variant"`|
Review Comment:
As I understand here, this is to provide the json string of the Iceberg
type. It should be just showing "variant" for variant type, similar to
primitive types? Let me know if I misunderstand how this part is getting used.
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