rdblue commented on code in PR #16025:
URL: https://github.com/apache/iceberg/pull/16025#discussion_r4161552306
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format/spec.md:
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@@ -965,6 +1093,20 @@ A snapshot consists of the following fields:
| | | _required_ | **`added-rows`** |
The upper bound of the number of rows with assigned row IDs, see [Row
Lineage](#row-lineage) |
| | | _optional_ | **`key-id`** | ID
of the encryption key that encrypts the manifest list key metadata |
+=== "v4"
+ | v4 | Field | Description |
+ | ---------- |------------------------------|-------------|
+ | _required_ | **`snapshot-id`** | A unique long ID |
+ | _optional_ | **`parent-snapshot-id`** | The snapshot ID of the
snapshot's parent. Omitted for any snapshot with no parent |
+ | _required_ | **`sequence-number`** | A monotonically increasing
long that tracks the order of changes to a table |
+ | _required_ | **`timestamp-ms`** | A timestamp when the
snapshot was created, used for garbage collection and table inspection |
+ | _required_ | **`root-manifest`** | The location of the root
manifest for this snapshot |
Review Comment:
Yeah, "Manifest lists are the snapshot root file used by v1-v3."
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