@Override
    public void open(Configuration parameters) {
        this.tracer = new TotalSizeTracer(this.config);
        initBuffer();
        initWriteFunction();
        if (metricOption != null) {
            this.sinkMetricData = new SinkMetricData(metricOption, getRuntimeContext().getMetricGroup());
        }
    }
Constructs a StreamingSinkFunction.

@param config The config options
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/hudi/src/main/java/org/apache/inlong/sort/hudi/sink/StreamWriteFunction.java