Sqoop tutorial 14 : Incrementally Importing Mutable Data

Use the lastmodified mode instead of the append mode.

For example, use the following command to transfer rows whose value in column last_update_date is greater than
2013-05-22 01:01:01:

sqoop import \
--connect jdbc:mysql://mysql.example.com/sqoop \
--username sqoop \
--password sqoop \
--table visits \
--incremental lastmodified \
--check-column last_update_date \
--last-value "2013-05-22 01:01:01"

You can take advantage of the built-in Sqoop metastore that allows you to save all parameters for later reuse. You can create a simple incremental import job with the following command:

sqoop job \
--create visits \
-- \
import \
--connect jdbc:mysql://mysql.example.com/sqoop \
--username sqoop \
--password sqoop \
--table visits \
--incremental append \
--check-column id \
--last-value 0
And start it with the --exec parameter:
sqoop job --exec visits

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