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    E-MapReduce:Use ZooKeeper

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    E-MapReduce:Use ZooKeeper

    Last Updated:Mar 26, 2026

    Use zkCli.sh to connect to ZooKeeper on your E-MapReduce (EMR) cluster and run data operations from the command line.

    Prerequisites

    Before you begin, ensure that you have:

    • An EMR cluster with ZooKeeper selected as an optional service during cluster creation. For more information, see Create a cluster.

    • SSH access to the cluster. For more information, see Log on to a cluster.

    Connect to ZooKeeper

    1. Log on to the cluster in SSH mode.

    2. Run the following command to connect to ZooKeeper:

      zkCli.sh -server master-1-1:2181

    3. After you connect to ZooKeeper, run help to display all commands supported by ZooKeeper.

    Related resources

    For more information about ZooKeeper, see the ZooKeeper Getting Started Guide.