1、数据量变大后重启namenode失败。

修改

vi /var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_namenode.py

头部添加

import time

添加循环

if leave_safe_mode:上面添加

for i in range(1,90+1,1):

  code,out=shell.call(namenode_safe_mode_off)

  if code == 0:

    leave_safe_mode = True

    break

  time.sleep(10)