FlinkCDC读取MySQL，并行度高于1就无法捕获更新数据

FlinkCDC读取MySQL，并行度高于1就无法捕获更新数据，并且给fromSource单独设置并行度也未能成功捕获更新数据。

    private SingleOutputStreamOperator<TableProcess> readConfig(StreamExecutionEnvironment env) {
        MySqlSource<String> mySqlSource = MySqlSource.<String>builder()
                .hostname("Master")
                .port(3306)
                .databaseList("xxx") // set captured database
                .tableList("xxx.aaa") // set captured table
                .username("root")
                .password("xxxxxx")
                .deserializer(new JsonDebeziumDeserializationSchema()) // converts SourceRecord to JSON String
                .build();

        return env
                .fromSource(
                        mySqlSource,
                        WatermarkStrategy.noWatermarks(),
                        "Mysql Source")
                .setParallelism(1)
                .map(json -> {
                    JSONObject jsonObj = JSON.parseObject(json);
                    return jsonObj.getObject("after", TableProcess.class);
                });
    }

这段代码单独拿出来，env并行度设置为1是可以捕获更新数据的。

        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-java</artifactId>
            <version>1.13.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-java_2.12</artifactId>
            <version>1.13.0</version>
        </dependency>

        <dependency>
            <groupId>com.ververica</groupId>
            <artifactId>flink-connector-mysql-cdc</artifactId>
            <version>2.1.0</version>
        </dependency>

求助大佬。