Sqoop merge

[#1]

Hi I have a series of question related to sqoop

1)what is the difference between sqoop --incremental lastmodified --merge-key and sqoop merge tool. 2)suppose I have a dataset with 2 updates and 1 insert and I am performing sqoop merge by creating jar on old dataset using codegen tool. what records will I get in my target dir?

3)If I am getting Updates,inserts,deletes and non change records(basically everything) but in new directory ..then whats the use of sqoop merge . This can be achived by doing full load?

[#2]

@Bharath Kumar K

Can you please help me out?