public void open()

in flink-connector-opensearch/src/main/java/org/apache/flink/streaming/connectors/opensearch/OpensearchSink.java [329:337]


    public void open(Configuration parameters) throws Exception {
        client = createClient();
        bulkProcessor = buildBulkProcessor(new BulkProcessorListener());
        requestIndexer =
                new OpensearchBulkProcessorIndexer(
                        bulkProcessor, flushOnCheckpoint, numPendingRequests);
        failureRequestIndexer = new BufferingNoOpRequestIndexer();
        opensearchSinkFunction.open();
    }