The ZooKeeper service is currently enabled in E-MapReduce clusters by default.
Create a cluster
After the cluster is successfully created and the status is idle, in the Clusters and Services page, select ZooKeeper, and then click Component Topology to view ZooKeeper nodes. E-MapReduce enables 3 ZooKeeper nodes. Corresponding intranet IP address (2181 for port by default) of ZooKeeper nodes are indicated in the IP column for the access to the ZooKeeper service.