aokolnychyi commented on a change in pull request #1499:
URL: https://github.com/apache/iceberg/pull/1499#discussion_r497175618
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File path: site/docs/spec.md
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@@ -416,25 +530,91 @@ Notes:
### Delete Formats
-This section details how to encode row-level deletes in Iceberg metadata.
Row-level deletes are not supported in the current format version 1. This part
of the spec is not yet complete and will be completed as format version 2.
+This section details how to encode row-level deletes in Iceberg delete files.
Row-level deletes are not supported in v1.
+
+Row-level delete files are valid Iceberg data files: files must use valid
Iceberg formats, schemas, and column projection. It is recommended that delete
files are written using the table's default file format.
Review comment:
If I remember correctly, Hive also allows configuring differential files
separately from base files (properties like target file size, row-group size,
etc). I think that will also apply in our case (we can figure out details while
implementing minor and major compactions).
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