In the HA master mode, how to identify the alive master?

[Xuelin Cao]

Hi,

      In our project, we use "stand alone duo master" + "zookeeper" to make
the HA of spark master.

      Now the problem is, how do we know which master is the current alive
master?

      We tried to read the info that the master stored in zookeeper. But we
found there is no information to identify the "current alive master".

      Any suggestions for us?

Thanks