[jira] [Created] (SPARK-29087) Use DelegatingServletContextHandler to avoid CCE

["Dongjoon Hyun (Jira)" <ji...@apache.org>]

Dongjoon Hyun created SPARK-29087:
-------------------------------------

             Summary: Use DelegatingServletContextHandler to avoid CCE
                 Key: SPARK-29087
                 URL: https://issues.apache.org/jira/browse/SPARK-29087
             Project: Spark
          Issue Type: Improvement
          Components: Structured Streaming
    Affects Versions: 2.4.0, 3.0.0
            Reporter: Dongjoon Hyun


SPARK-27122 fixes `ClassCastException` at `yarn` module by using `DelegatingServletContextHandler`. Initially, this was discovered with JDK9+, but the class path issues affected in JDK8, too. This issue aims to fix `streaming` module.

{code}
$ build/mvn test -pl streaming
...
UISeleniumSuite:
- attaching and detaching a Streaming tab *** FAILED ***
  java.lang.ClassCastException: org.sparkproject.jetty.servlet.ServletContextHandler cannot be cast to org.eclipse.jetty.servlet.ServletContextHandler
...
Tests: succeeded 337, failed 1, canceled 0, ignored 1, pending 0
*** 1 TEST FAILED ***
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
{code}



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