Lei Xu

这个修改应该不是最终方案，老代码在某些装了docker的机器上依然可以拿到正确的IP地址，应该是和ioctl的SIOCGIFCONF有关系，暂时没查到这个列表的内部sort规则。

import = 生态？

@gabrielhartmann principal would be a "" string if it does not exist in mesos-site.xml, so this PR does not change the default behavior. IMO, the principal should be the same...

@elingg we tested spark on mesos with auth, the "auth" function work OK. But unfourtunatly, 1.5.0 and 1.5.1 could not support run task with a specify role, but work well...

I'm not quite sure that use roles to control resource usage limit for each node in the cluster is in your road map.

@gabrielhartmann :+1: I will rebase the commit later.

@gabrielhartmann yes.

@gabrielhartmann sorry to rebase this commit so late.