# kerberos认证
klist -kt /var/krb5kdc/emr.keytab
kinit -kt /var/krb5kdc/emr.keytab xxxx/x.x.x.x@TBDS-XXXXXX
# 采用 Quasi-Monte Carlo 算法来估算PI的值
yarn jar /usr/local/service/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-3.2.2-TBDS-5.3.1.jar pi -D mapreduce.job.queuename=default 16 1000
