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    E-MapReduce:View the deployment information of service components

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    E-MapReduce:View the deployment information of service components

    Last Updated:Mar 26, 2026

    Service components deployed on EMR cluster nodes vary by cluster version. For example, HDFS deploys NameNode on the master node and DataNode on core nodes. Use this procedure to see exactly which components are running on each node type in your cluster.

    Node types

    Each EMR on ECS cluster uses three node types with distinct roles:

    Node type Role
    Master node Coordinates the cluster. Runs management components that distribute data and tasks, track job status, and monitor cluster health.
    Core node Runs compute tasks and stores data in the Hadoop Distributed File System (HDFS).
    Task node Runs compute tasks only. Task nodes do not store data in HDFS.

    Understanding which services run on which node type helps you interpret component status and narrow down issues when troubleshooting.

    View component deployment

    1. Log on to the EMR console. In the left-side navigation pane, click EMR on ECS.

    2. In the top navigation bar, select the region where your cluster resides and select a resource group.

    3. On the EMR on ECS page, find the cluster and click Services in the Actions column.

    4. On the Services tab, find the service and click Status.

    5. In the Components section of the Status tab, view the component deployment information.

    The following table lists the components deployed for each service in EMR cluster V5.15.1.

    Service name Master node Core node Task node
    Hadoop-Common HadoopCommonRuntime HadoopCommonRuntime HadoopCommonRuntime
    HDFS NameNode, HdfsRuntime, SecondaryNameNode DataNode, HdfsRuntime HdfsRuntime
    OSS-HDFS OssHdfsRuntime OssHdfsRuntime OssHdfsRuntime
    Hive HiveMetaStore, HiveServer, HiveRuntime HiveRuntime HiveRuntime
    Spark 2 SparkHistoryServer, SparkThriftServer, SparkRuntime SparkRuntime SparkRuntime
    Spark 3 SparkHistoryServer, SparkThriftServer, SparkRuntime SparkRuntime SparkRuntime
    Tez TezTomcat, TezRuntime TezRuntime TezRuntime
    Trino TrinoMaster, TrinoRuntime TrinoWorker, TrinoRuntime TrinoWorker, TrinoRuntime
    Delta Lake DeltaLakeRuntime DeltaLakeRuntime DeltaLakeRuntime
    Hudi HudiRuntime HudiRuntime HudiRuntime
    Iceberg IcebergRuntime IcebergRuntime IcebergRuntime
    Flume FlumeRuntime, FlumeAgent FlumeRuntime, FlumeAgent FlumeRuntime, FlumeAgent
    Kyuubi KyuubiServer, KyuubiRuntime KyuubiRuntime KyuubiRuntime
    YARN ResourceManager, WebAppProxyServer, TimelineServer, MRHistoryServer, YarnRuntime NodeManager, YarnRuntime NodeManager, YarnRuntime
    Impala Catalogd, Statestored, ImpalaRuntime Impalad, ImpalaRuntime Impalad, ImpalaRuntime
    OpenLDAP OpenLDAP, Sssd Sssd Sssd
    Ranger RangerAdmin, RangerUserSync, Solr, JindoAuthRuntime, JindoAuthServer JindoAuthRuntime JindoAuthRuntime
    Ranger-Plugin RangerPlugin RangerPlugin RangerPlugin
    DLF-Auth DLFAuthRuntime DLFAuthRuntime DLFAuthRuntime
    Presto PrestoMaster, PrestoRuntime PrestoWorker, PrestoRuntime PrestoWorker, PrestoRuntime
    StarRocks 2 Frontend, StarRocksRuntime Backend, Broker, StarRocksRuntime ComputeNode, StarRocksRuntime
    StarRocks 3 Frontend, StarRocksRuntime Backend, Broker, StarRocksRuntime ComputeNode, StarRocksRuntime
    Doris DorisRuntime, FE DorisRuntime, BE, ApacheBroker None
    ClickHouse ClickHouseRuntime ClickHouseRuntime, ClickHouseServer, ClickHouseKeeper None
    ZooKeeper ZookeeperRuntime, ZookeeperServer None None
    Sqoop SqoopRuntime SqoopRuntime SqoopRuntime
    Knox Knox Knox Knox
    Celeborn CelebornMaster, CelebornRuntime CelebornWorker, CelebornRuntime CelebornWorker, CelebornRuntime
    Flink FlinkHistoryServer, FlinkRuntime FlinkRuntime FlinkRuntime
    HBase HBaseRuntime, HMaster, ThriftServer, RestServer HBaseRuntime, HRegionServer HBaseRuntime, HRegionServer
    HBASE-HDFS HBaseHdfsNameNode, HBaseHdfsJournalNode, HBaseHdfsZKFC, HBaseHdfsKMS, HBaseHdfsHttpFS, HBaseHdfsRuntime, HBaseHdfsClient, HBaseHdfsSecondaryNameNode HBaseHdfsDataNode, HBaseHdfsRuntime, HBaseHdfsClient, HBaseHdfsSecondaryNameNode HBaseHdfsRuntime, HBaseHdfsClient, HBaseHdfsSecondaryNameNode
    JindoCache JindoCacheServer, JindoCacheRuntime JindoCacheWorker, JindoCacheRuntime JindoCacheWorker, JindoCacheRuntime
    Kafka KafkaSchemaRegistry, KafkaRestProxy, KafkaRuntime KafkaBroker, KafkaSchemaRegistry, KafkaRestProxy, KafkaRuntime KafkaConnect, KafkaRuntime
    Kudu KuduMaster, KuduRuntime KuduTserver, KuduRuntime KuduRuntime
    Paimon PaimonRuntime PaimonRuntime PaimonRuntime
    Phoenix PhoenixRuntime PhoenixRuntime PhoenixRuntime
    The table above reflects component deployment for V5.15.1. Components may differ in other cluster versions.

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