Apache Spark 2.3.0 Windows环境下spark-shell启动失败求助

Hey there, let's tackle this Spark connection issue you're hitting. That 18/04/25 07:18:41 WARN StandaloneAppClient$ClientEndpoint: Failed to connect to master 10.250.54.201:7077 error is a typical hiccup when setting up Spark in Standalone mode, so let's walk through the most common fixes step by step:

• Verify the Spark Master is running

  • Log into the machine at 10.250.54.201 and run the jps command. You should see a Master process listed. If not, start it from your Spark installation directory with:

    ./sbin/start-master.sh
    

  • You can also check the Master's web UI at http://10.250.54.201:8080—if the page loads and shows the Master as active, that's a good sign.

• Check network connectivity between your Windows machine and the Master

  • Open Command Prompt on Windows and run:

    ping 10.250.54.201
    

    If this fails, there's a network issue (firewall, routing, or IP misconfiguration) that needs fixing first.
  • Next, test if the 7077 port is accessible with PowerShell:

    Test-NetConnection 10.250.54.201 -Port 7077
    

    If the port is closed, adjust the firewall rules on the Master machine to allow inbound connections on port 7077.

• Ensure you're targeting the correct Master when starting spark-shell

  • Make sure you launch spark-shell with the explicit Master address:

    spark-shell --master spark://10.250.54.201:7077
    

    If you don't specify this, Spark defaults to looking for a local Master, which won't connect to your remote instance.
  • You can also check the spark-defaults.conf file in your Spark config directory—if there's a spark.master setting, confirm it's set to spark://10.250.54.201:7077.

• Confirm the Master is bound to the correct IP address

  • Sometimes the Master might bind to 127.0.0.1 (localhost) instead of the public IP, making it unreachable remotely. Check the Master's log file (in your Spark installation's logs folder, named like spark-*-master-*.out) for a line like:

    Starting Spark master at spark://10.250.54.201:7077

  • If the IP here is incorrect, restart the Master with the explicit host parameter:

    ./sbin/start-master.sh --host 10.250.54.201
    

• Check for version compatibility

  • Ensure the Spark version on the Master node is also 2.3.0. Mismatched versions between the client (your Windows machine) and Master can cause connection failures.

If none of these steps resolve the issue, sharing more details like the full Master startup log or your network setup would help narrow things down further.

内容的提问来源于stack exchange，提问作者Mohinimohana Sahoo