Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/17246#discussion_r106721109
--- Diff: docs/structured-streaming-kafka-integration.md ---
@@ -373,11 +375,204 @@ The following configurations are optional:
</tr>
</table>
+## Producing Data to Kafka
--- End diff --
I think section needs a big caveat regarding the lack of guarantees of
Kafka writes - since Kafka does not support transactions, data may be
duplicated due to failures and reexecutions
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