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      Help Center/ MapReduce Service/ User Guide (ME-Abu Dhabi Region)/ FAQs/ Big Data Service Development/ What Is the Port for Accessing HDFS Using Python?

      What Is the Port for Accessing HDFS Using Python?

      Updated on 2022-12-08 GMT+08:00
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      The default port of open source HDFS is 50070 for versions earlier than MRS 3.0.0, and 9870 for MRS 3.0.0 or later. Common HDFS Ports describes the common ports of HDFS.

      Common HDFS Ports

      The protocol type of all ports in the table is TCP.

      Parameter

      Default Port

      Port Description

      dfs.namenode.rpc.port
      • 9820 (versions earlier than MRS 3.x)
      • 8020 (MRS 3.x and later)

      NameNode RPC port

      This port is used for:

      1. Communication between the HDFS client and NameNode

      2. Connection between the DataNode and NameNode

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.namenode.http.port

      9870

      HDFS HTTP port (NameNode)

      This port is used for:

      1. Point-to-point NameNode checkpoint operations.

      2. Connecting the remote web client to the NameNode UI

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.namenode.https.port

      9871

      HDFS HTTPS port (NameNode)

      This port is used for:

      1. Point-to-point NameNode checkpoint operations

      2. Connecting the remote web client to the NameNode UI

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.datanode.ipc.port

      9867

      IPC server port of DataNode

      This port is used for:

      Connection between the client and DataNode to perform RPC operations.

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.datanode.port

      9866

      DataNode data transmission port

      This port is used for:

      1. Transmitting data from HDFS client from or to the DataNode

      2. Point-to-point DataNode data transmission

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.datanode.http.port

      9864

      DataNode HTTP port

      This port is used for:

      Connecting to the DataNode from the remote web client in security mode

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.datanode.https.port

      9865

      HTTPS port of DataNode

      This port is used for:

      Connecting to the DataNode from the remote web client in security mode

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.JournalNode.rpc.port

      8485

      RPC port of JournalNode

      This port is used for:

      Client communication to access multiple types of information

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.journalnode.http.port

      8480

      JournalNode HTTP port

      This port is used for:

      Connecting to the JournalNode from the remote web client in security mode

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      dfs.journalnode.https.port

      8481

      HTTPS port of JournalNode

      This port is used for:

      Connecting to the JournalNode from the remote web client in security mode

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

      httpfs.http.port

      14000

      Listening port of the HttpFS HTTP server

      This port is used for:

      Connecting to the HttpFS from the remote REST API

      NOTE:

      The port ID is a recommended value and is specified based on the product. The port range is not restricted in the code.

      • Is the port enabled by default during the installation: Yes
      • Is the port enabled after security hardening: Yes

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