Java Spark connection fails UnavailableException: Servlet class org.glassfish.jersey.servlet.ServletContainer is not a javax.servlet.Servlet

Question

I have Spark running locally in Docker. Port 7077 is exposed and I'm able to hit the WebUI at localhost:9090.

I try connecting with the following code from java:

 SparkSession spark = SparkSession
                .builder()
                .master("spark://localhost:7077")
                .appName("foo")
                .getOrCreate();

But when I run the application, I get this error:

Caused by: javax.servlet.UnavailableException: Servlet class org.glassfish.jersey.servlet.ServletContainer is not a javax.servlet.Servlet

Why is this error happening and how do I fix it?

Unfortuntaly, I just tried this and it did not fix the issue. — ritratt, Jul 26 '23 at 00:36
There is something wrong at the server, a misconfiguration, and/or the web service isn't designed to respond to that URL without more in the path. — user207421, Jul 26 '23 at 00:44

ritratt · Accepted Answer · 2023-08-01T16:41:20.557

0

This is due to a dependency conflict between Spring and Spark. The below change to my pom.xml fixed the issue for me:

<properties>
<jakarta-servlet.version>4.0.3</jakarta-servlet.version>
<jersey.version>2.36</jersey.version>
</properties>

More info on this Stackoverflow question.

edited Aug 01 '23 at 16:41

answered Aug 01 '23 at 08:49

ritratt

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Java Spark connection fails UnavailableException: Servlet class org.glassfish.jersey.servlet.ServletContainer is not a javax.servlet.Servlet

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