Sqoop tutorial 13 : Importing Only New Data

Activate Sqoop’s incremental feature by specifying the --incremental parameter. The parameter’s value will be the type of incremental import. When your table is only getting new rows and the existing ones are not changed, use the append mode.

Incremental import also requires two additional parameters: --check-column indicates a column name that should be checked for newly appended data, and --last-value contains the last value that successfully imported into Hadoop


The following example will transfer only those rows whose value in column id is greater than 1:

sqoop import \
--connect jdbc:mysql://mysql.example.com/sqoop \
--username sqoop \
--password sqoop \
--table visits \
--incremental append \
--check-column id \
--last-value 1

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