ajantha-bhat commented on a change in pull request #4223:
URL: https://github.com/apache/iceberg/pull/4223#discussion_r841093870
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File path: docs/spark/spark-writes.md
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@@ -207,6 +217,11 @@ WHERE EXISTS (SELECT oid FROM prod.db.returned_orders
WHERE t1.oid = oid)
For more complex row-level updates based on incoming data, see the section on
`MERGE INTO`.
+!!! Note
+ By default Spark uses copy-on-write update mode.
+ With spark-3.2 and onwards, iceberg supports merge-on-read mode.
Review comment:
updated. Thanks
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