Veena Basavaraj created SQOOP-1796:
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Summary: Support Incremental Semantics in command line tool for Job
Key: SQOOP-1796
URL: https://issues.apache.org/jira/browse/SQOOP-1796
Project: Sqoop
Issue Type: Sub-task
Reporter: Veena Basavaraj
WIP ( so do not consider this as a final design)
This task will support the Incremental semantics to provide in the command line
tool. In sqoop 1 here is the semantics, using the --incremental and the
corresponding fields that specify the column and value. The > is somehow not
configurable. This can be easily made configurable using predicates that
specify the column/ value and the operator in one shot.
{code}
sqoop import \
--connect jdbc:mysql://mysql.example.com/sqoop \
--username sqoop \
--password sqoop \
--table visits \
--incremental append \
--check-column id \
--last-value 1
{code}
In Sqoop 2: When we create a job, we are asked for ( wrt to the connectors)
FromJobConfigValues
ToJobConfigValues
Should the incremental be more generically a delta import, so this predicate
can me more more generic, such as values in between 'A' and 'B' or values < 20.
Its just going to provide flexibility and avoid having 2 fields, incremental,
check-column and value. It can all be encapsulated in one field predicate.
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