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将记录从mysql导出到hdfs中
01connecturl=jdbc:mysql://localhost:3306/user_action0203username=root0405password=1234560607outputpath=/hdfs/recommend/user_action/watch_record0809tablename= watch_record1011columns=id,uid,mid,timestamp121314ifjobcreated =`sqoop job list | grep import_ watch_record`1516#检查import_ watch_record这个job是否已经创建 如果未创建则创建1718if [ $ifjobcreated = ’’ ] then1920sqoop  job  import_ watch_record /2122  --create  --import /2324  --connect  $connecturl/2526  --username  $username/2728  --password  $password/2930  --target-dir  $outputpath/3132  --m  1/3334  --table  $tablename/3536  –columns  $columns/3738  --incremental  append/3940  --check-column  id/4142  --last-value  04344fi4546  4748sqoop  job --exec import_ watch_record
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