ajantha-bhat commented on code in PR #7105:
URL: https://github.com/apache/iceberg/pull/7105#discussion_r1352500873


##########
format/spec.md:
##########
@@ -702,6 +703,58 @@ Blob metadata is a struct with the following fields:
 | _optional_ | _optional_ | **`properties`** | `map<string, string>` | 
Additional properties associated with the statistic. Subset of Blob properties 
in the Puffin file. |
 
 
+#### Partition statistics
+
+Partition statistics files are based on [Partition Statistics file 
spec](#partition-statistics-file). 
+Partition statistics are not required for reading or planning and readers may 
ignore them.
+Each table snapshot may be associated with at most one partition statistic 
file.
+A writer can optionally write the partition statistics file during each write 
operation, and 
+it must be registered in the table metadata file to be considered as a valid 
statistics file for the reader.
+
+`partition-statistics` field of table metadata is an optional list of struct 
with the following fields:
+
+| v1 | v2 | Field name | Type | Description |
+|----|----|------------|------|-------------|
+| _required_ | _required_ | **`snapshot-id`** | `long` | ID of the Iceberg 
table's snapshot the partition statistics file is associated with. |
+| _required_ | _required_ | **`statistics-file-path`** | `string` | Path of 
the partition statistics file. See [Partition Statistics 
file](#partition-statistics-file). |
+| _required_ | _required_ | **`file-size-in-bytes`** | `long` | Size of the 
partition statistics file. |
+
+#### Partition Statistics file

Review Comment:
   yes. updated. 
   
   Also updated the header of Table statistics -> Table Statistics 



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