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From "Shixiong(Ryan) Zhu" <>
Subject Re: Spark UI standalone "crashes" after an application finishes
Date Tue, 01 Mar 2016 00:02:58 GMT
Do you mean you cannot access Master UI after your application completes?
Could you check the master log?

On Mon, Feb 29, 2016 at 3:48 PM, Sumona Routh <> wrote:

> Hi there,
> I've been doing some performance tuning of our Spark application, which is
> using Spark 1.2.1 standalone. I have been using the spark metrics to graph
> out details as I run the jobs, as well as the UI to review the tasks and
> stages.
> I notice that after my application completes, or is near completion, the
> UI "crashes." I get a Connection Refused response. Sometimes, the page
> eventually recovers and will load again, but sometimes I end up having to
> restart the Spark master to get it back. When I look at my graphs on the
> app, the memory consumption (of driver, executors, and what I believe to be
> the daemon ( appears to be healthy. Monitoring the
> master machine itself, memory and CPU appear healthy as well.
> Has anyone else seen this issue? Are there logs for the UI itself, and
> where might I find those?
> Thanks!
> Sumona

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