> For any insert operation, there will be one Zero bytes file. I would like to > know importance of this Zero bytes file.
They are directories. I'm assuming you're using S3A + screenshots from something like Bucket explorer. These directory entries will not be shown if you do something like "hadoop fs -ls s3a://…/" I had a recent talk covering the specifics of S3 + Hive - https://www.slideshare.net/secret/3cfQbeo3cI6GpK/3 Cheers, Gopal