i am trying to import data from sql server to hbase through sqoop. the sqoop script is work,i tried with a small data and it worked. but when i trying to use it import a huge data (20G) at first it shows that job is submitted,mapping 0%,reducing 0%. after server time later,the job is still in running statu. so i check the logs,it shows connection refused,caused by region servers dead,all servers dead. i start up hbase again with start-hbase.sh,and it works for a while then dead,i don't know how to do about it.
do anyone meet this problem?