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Update connector-sink.md
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hellolilyliuyi authored Aug 31, 2023
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Expand Up @@ -132,8 +132,6 @@ In your Maven project's `pom.xml` file, add the Flink connector as a dependency

## Usage notes

When you load data from Apache Flink® into StarRocks, take note of the following points:

- Loading data into StarRocks tables needs INSERT privilege. If you do not have the INSERT privilege, follow the instructions provided in [GRANT](https://docs.starrocks.io/en-us/latest/sql-reference/sql-statements/account-management/GRANT) to grant the INSERT privilege to the user that you use to connect to your StarRocks cluster.

- Since v2.4, StarRocks provides a Stream Load transaction interface. Since Flink connector version 1.2.4, the Sink is redesigned to implement exactly-once semantics based on transactional interfaces. Compared to the previous implementation based on non-transactional interfaces, the new implementation reduces memory usage and checkpoint overhead, thereby enhancing real-time performance and stability of loading. Starting from Flink connector version 1.2.4, the Sink implements transactional interfaces by default. To enable non-transactional interfaces, the `sink.version` needs to be configured as `V1`.
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