I have a use case where I need to save a parquet file from Lambda to S3. I need to store the events triggered in the Lambda function in append mode..

I tried with Avro but it doesn't permit to store the data in append mode in a same parquet file..

Till now, I found that just spark permit to store data in parquet file in append mode... Then, I could use Lambda to submit a spark job that store the data. What do you think about this possible solution?

However, really doesn't exists a solution without the use of spark? Thanks in advance