Failed ZooKeeper check

The installer will fail if it can't connect to the ZooKeeper. This can occur if the ZooKeeper crashes during the installation.

If this happens, you will receive an error similar to the following:

Checking Zookpeers...Exception in thread "main" org.apache.zookpeer ...
Fail! Error executing zookeeper-client on jdoe.example.com. Return code 1.

To fix this problem, try rerunning the installer according to the instructions in Rerunning the installer. If it continues to fail, check if ZooKeeper is completely down and restart it if it is.