@Override
    public void close() throws IOException {
        if (redisCommandsContainer != null) {
            redisCommandsContainer.close();
        }
    }
This is a lookup method which is called by Flink framework in runtime, only support one key

@param keys lookup keys
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/redis/src/main/java/org/apache/inlong/sort/redis/source/RedisRowDataLookupFunction.java