hsupu opened a new issue #3233:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/3233
*For better global communication, please give priority to using English
description, thx! *
**Which version of Dolphin Scheduler:**
-[1.1.0-preview]
**Describe the bug**
Just started the api-server, logs show as follows:
```
[WARN] 2020-07-17 10:17:17.231
org.eclipse.jetty.server.handler.ContextHandler.application:[2355] - unavailable
java.lang.ClassCastException: class
jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class
java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and
java.net.URLClassLoader are in module java.base of loader 'bootstrap')
at
org.apache.jasper.compiler.JspRuntimeContext.<init>(JspRuntimeContext.java:174)
at org.apache.jasper.servlet.JspServlet.init(JspServlet.java:150)
at
org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:672)
at
org.eclipse.jetty.servlet.ServletHolder.initialize(ServletHolder.java:429)
at
org.eclipse.jetty.servlet.ServletHandler.lambda$initialize$0(ServletHandler.java:750)
at
java.base/java.util.stream.SortedOps$SizedRefSortingSink.end(SortedOps.java:357)
at
java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
at
java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at
java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312)
at
java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735)
at
java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734)
at
java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658)
at
org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:744)
at
org.springframework.boot.web.embedded.jetty.JettyEmbeddedWebAppContext$JettyEmbeddedServletHandler.deferredInitialize(JettyEmbeddedWebAppContext.java:46)
at
org.springframework.boot.web.embedded.jetty.JettyEmbeddedWebAppContext.deferredInitialize(JettyEmbeddedWebAppContext.java:36)
at
org.springframework.boot.web.embedded.jetty.JettyWebServer.handleDeferredInitialize(JettyWebServer.java:221)
at
org.springframework.boot.web.embedded.jetty.JettyWebServer.start(JettyWebServer.java:142)
at
org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:311)
at
org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:164)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
at
org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
at
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
at
org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
at
org.apache.dolphinscheduler.api.ApiApplicationServer.main(ApiApplicationServer.java:36)
```
I found [an explaination on stackoverflow]. It shows that JDK 9 has a
breaking change here.
[1]:
https://stackoverflow.com/questions/39739075/hive-shell-not-loading/41637409#41637409
**Requirement or improvement**
Please fix this to make DS compatible with modern JDK. Thanks!
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