hadoop杀僵尸节点

comm=$1

if [ -z $comm ]; then
     hosts=`cat /opt/sohuhadoop/conf/slaves`
     for host in $hosts
     do
         file=`echo $0|perl -F"/" -anle 'print $F[-1]' `
         scp -q $0 $host:/tmp/ ;
         echo $host mapred.Child
         ssh $host "sh /tmp/$file run"
     done ;

 elif [ $comm = "run" ];then
     source /etc/profile;
     for c in `jps -ml |grep org.apache.hadoop.mapred.Child|perl -nle 'print $1 if /^(\d+).*/' `
         do
             jmap -histo $c |perl -ne '
                 $sum+=$1 if /:\s+\d+\s+(\d+)/;
                 
                 END{
                     $mem=$sum/1024/1024;printf (" '$c' >%dm",$mem);
                 }
             '
             ps -A -opid,etime|grep $c |perl -nle ' 
                 if(/(.*)\s(\d+-\d+:\d+)/){
                     print " run=$2 ; kill";
                     system("kill -9 $1");