[GitHub] [iceberg] xiaotianzhang01 commented on a change in pull request #3827: Docs: Add `Streaming upsert write` in flink.md

[GitBox <gi...@apache.org>]

xiaotianzhang01 commented on a change in pull request #3827:
URL: https://github.com/apache/iceberg/pull/3827#discussion_r778644184



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File path: site/docs/flink.md
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@@ -522,6 +522,18 @@ FlinkSink.forRowData(input)
 env.execute("Test Iceberg DataStream");
 ```
 
+## Streaming upsert write
+
+Iceberg supports upsert based on the primary key when writing streaming data.

Review comment:
       Thank you for your reply, this can be removed. The introduction of this feature is needed for new users of iceberg




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