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From Jacek Laskowski <>
Subject Re: Spark Web UI port 4040 not working
Date Tue, 26 Jul 2016 11:06:03 GMT

Go to 8080 and under Running Applications click the Application ID.
You're on the page with Application Detail UI just before Executor
Summary table. Use it to access the web UI.

Jacek Laskowski
Mastering Apache Spark
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On Tue, Jul 26, 2016 at 3:21 AM, Jestin Ma <> wrote:
> Hello, when running spark jobs, I can access the master UI (port 8080 one)
> no problem. However, I'm confused as to how to access the web UI to see
> jobs/tasks/stages/etc.
> I can access the master UI at http://<master-node>:8080. But port 4040 gives
> me a -connection cannot be reached-.
> Is the web UI http://<master-node> with a port of 4040?
> I'm running my Spark job on a cluster machine and submitting it to a master
> node part of the cluster. I heard of ssh tunneling; is that relevant here?
> Thank you!

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