sqoop codegen --connect jdbc:mysql://127.0.0.1/mydb --table mergetab --username root --password cloudera --outdir /user/cloudera/codegenclasses --fields-terminated-by 't'

-rw-r--r--   1 cloudera cloudera       9572 2017-04-20 16:26 codegenclasses/mergetab.class
-rw-r--r--   1 cloudera cloudera       3902 2017-04-20 16:26 codegenclasses/mergetab.jar
-rw-r--r--   1 cloudera cloudera      12330 2017-04-20 16:26 codegenclasses/mergetab.java

sqoop merge --merge-key id --new-data /user/cloudera/incrdata/incrementaldata --onto /user/cloudera/hivetables/fulltabledata --target-dir /user/cloudera/updateddatam --class-name /user/cloudera/codegenclasses/mergetab.class --jar-file /user/cloudera/codegenclasses/mergetab.jar

Encountered IOException running import job: java.io.FileNotFoundException: File /user/cloudera/codegenclasses/44059c9b2bd47b95f03866d8d93eff7f/mergetab.jar does not exist