sqoop import -D mapred.job.name='default oraoop'  --driver oracle.jdbc.driver.OracleDriver --connect "jdbc:oracle:thin:MyIp:MyServiceName" --username "XXXX" --password "XX" --target-dir "My_dir" --query 'select * from MyTable where $CONDITIONS' --split-by "coulmn"  --boundary-query "SELECT min(splitColumn),max(SplitCoulmn)  FROM DUAL" --num-mappers 30