每隔2分钟，就往hive中增量导入数据，自循环实现导入-sqoop

每隔2分钟，就往hive中增量导入数据，自循环实现导入

#!/bin/sh
export SQOOP_HOME=/usr/share/sqoop-1.4.4
hostname="192.168.1.199"
user="root"
password="root"
database="test"
table="tags"
curr_max=0
 
function db_to_hive(){
 
    ${SQOOP_HOME}/bin/sqoop import --connect jdbc:mysql://${hostname}/${database} --username ${user} --password ${password}  --table ${table}   --split-by docid --hive-import --hive-table lan.ding  
 --fields-terminated-by '	' --incremental  append  --check-column docid --last-value ${curr_max}   
    result=`mysql -h${hostname} -u${user} -p${password} ${database}<<EOF 
select max(docid) from ${table};
EOF`
curr_max=`echo $result |awk '{print $2}'`
}
 
if [ $# -eq 0 ];then
    while true
    do
      db_to_hive
      sleep 120
    done
    exit
fi