title: Compress file on S3
body: <p>I have a 17.7GB file on S3. It was generated as the output of a Hive query, and it isn't compressed.</p>
  
  <p>I know that by compressing it, it'll be about 2.2GB (gzip). How can I download this file locally as quickly as possible when transfer is the bottleneck (250kB/s).</p>
  
  <p>I've not found any straightforward way to compress the file on S3, or enable compression on transfer in s3cmd, boto, or related tools.</p>