title: While exporting the hbase snapshot will mappers use exiting hfile data for exporting or will they create duplicate data form these hfiles?
body: <p>I have an HBASE table with 1TB of storage having 100 regions. I took a snapshot of the table. While I export this snapshot to remote HDFS cluster will the mappers create 1TB extra space in existing HDFS cluster before transferring to remote cluster or it will use only referenced hfiles?</p>