title: Append to S3 Data string before or after AWS glue job
body: <p>I've currently setup an AWS Glue job to pull all the data from an old dynamoDB table into an S3 bucket. The problem is that we have a certain field for ids that in our new table design uses a 'convo#' in front of all conversation ids (ex. convo#123). The s3 objects from the old table still just use a string for the id(ex. 123).</p>
  <p>Is there a way to either append to the conversation Ids during the job to make them save to the S3 as convo# + id? Or is there a way I can make this append after the job has completed?</p>