Cloudera Docs

ZooKeeper

Understand the resource requirements for ZooKeeper before making the resource configuration changes in Cloudera Manager.

Component Java Heap CPU Disk
 ZooKeeper Server 
  • Minimum: 1 GB
  • Increase heap size when watching 10,000 - 100,000 ephemeral znodes and are using 1,000 or more clients.

Set this value using the Java Heap Size of ZooKeeper Server in Bytes ZooKeeper configuration property.

 Minimum: 4 cores

You can use HDDs or SSDs as per your requirement.