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https://issues.apache.org/jira/browse/SPARK-29087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-29087:
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Component/s: Spark Core
> Use DelegatingServletContextHandler to avoid CCE
> ------------------------------------------------
>
> Key: SPARK-29087
> URL: https://issues.apache.org/jira/browse/SPARK-29087
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, Structured Streaming
> Affects Versions: 2.4.0, 3.0.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
> 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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