This miniature article explains how to resolve the error “Error: Could not find or load main class org.apache.zookeeper.server.quorum.QuorumPeerMain“ when we start the Apache Zookeeper (apache-zookeeper-3.5.6.tar.gz) installed on a multi-node cluster. Distributed systems/applications leverage the service offers by Apache Zookeeper to manage their synchronization, configuration service as well as naming registry. Apache Zookeeper is a primary backbone for Hadoop, Kafka, HBase, Tableau, etc. The above mention error displays on the console when executing the script zkServer.sh
with input parameter “start” available inside the bin directory. This happens due to the unavailability of lib directory that holds the zookeeper-3.5.6.jar file.
Instead of extract/install apache-zookeeper-3.5.6.tar.gz on each node in the cluster, we should proceed with apache-zookeeper-3.5.6-bin.tar.gz. that having all the required jar files inside the lib directory. This binary can be downloaded from the following link.

https://archive.apache.org/dist/zookeeper/zookeeper-3.5.6/apache-zookeeper-3.5.6-bin.tar.gz

Written by
Gautam Goswami

Can be reached for real-time POC development and hands-on technical training at [email protected]. Besides, to design, develop just as help in any Hadoop/Big Data handling related task. Gautam is a advisor and furthermore an Educator as well. Before that, he filled in as Sr. Technical Architect in different technologies and business space across numerous nations.
He is energetic about sharing information through blogs, preparing workshops on different Big Data related innovations, systems and related technologies.