singhpk234 commented on code in PR #16294:
URL: https://github.com/apache/iceberg/pull/16294#discussion_r3226695427
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format/spec.md:
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@@ -751,6 +751,8 @@ 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 |
+In format version 4 and above, a snapshot's `timestamp-ms` must be strictly
greater than the `timestamp-ms` of its parent snapshot on the same branch. Root
snapshots (those without a parent) are not constrained by this requirement.
Review Comment:
how about tables migrated from v3 to v4 ... with broken timestamps ? do we
need to say something about them ?
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