AWS S3 Write At Offset

Question

is there any possibility to write at some offset inside S3 stored file? We really really don't want to download it for read-modify-write all the time because files are rather big (few GBs each).

Answer 1

There is no way to append data in S3.

One possible workaround could be to create new files every time (possibly using Kinesis Firehose) and run EMR jobs (possibly using Data Pipeline) to merge these small files at hourly or daily cadence as needed.