title: How to import only new data by using Sqoop?
body: <p>Let me give an example: I exported 1TB of data yesterday. Today, the database got another 1GB of data. If I try to import the data again today, Sqoop will import 1TB+1GB of data, then I am merging it. So it's a headache. I want to import only new data and append it to the old data. In this way, on a daily basis, I'll pull the RDBMS data into HDFS. </p>