Amazon EMR
Amazon EMR Release Guide

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Apache ZooKeeper

Apache ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. For more information about ZooKeeper, see

The following table lists the version of ZooKeeper included in the latest release of Amazon EMR, along with the components that Amazon EMR installs with ZooKeeper.

For the version of components installed with ZooKeeper in this release, see Release 5.27.0 Component Versions.

ZooKeeper Version Information for emr-5.27.0

Amazon EMR Release Label ZooKeeper Version Components Installed With ZooKeeper


ZooKeeper 3.4.14

emrfs, emr-goodies, hadoop-client, hadoop-hdfs-datanode, hadoop-hdfs-library, hadoop-hdfs-namenode, hadoop-httpfs-server, hadoop-kms-server, hadoop-yarn-nodemanager, hadoop-yarn-resourcemanager, hadoop-yarn-timeline-server, zookeeper-client, zookeeper-server