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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