Your stack trace lines up except for the top frame - jetty-io
9.4.4.v20210927 has a blank line for SelectorManager.java:81, and the
source for the file at that version doesn't contain the string "No
selectors". On the other hand, jetty-io 9.2.14.v20151116 has this as a
constructor (and line 81 is where it throws):
protected SelectorManager(Executor executor, Scheduler scheduler, int
selectors)
{
if (selectors<=0)
throw new IllegalArgumentException("No selectors");
this.executor = executor;
this.scheduler = scheduler;
_selectors = new ManagedSelector[selectors];
}
This much older version of jetty-io is the general version of Jetty that
GWT 2.9 used (as well as a few earlier GWT versions).
My guess is that you have correctly updated GWT, and the expected version
of Jetty has been updated (9.4.44), except somehow you have a dependency on
the old version of jetty-io. Check the rest of your classpath, or the
particular gradle plugin you are using?
On Tuesday, August 9, 2022 at 9:20:42 AM UTC-5 Michael Joyner wrote:
> Meh,
>
> I've managed to break my GWT setup again. This time for superdev mode.
> Looking for suggestions on where the (I assume) Jetty conflict is coming
> from.
>
> Getting the following stacktrace after "Module setup completed" is logged
> when trying to run "./gradlew subproject:gwtSuperDev"
>
> java.lang.IllegalArgumentException: No selectors
> at
> org.eclipse.jetty.io.SelectorManager.<init>(SelectorManager.java:81)
> at
> org.eclipse.jetty.server.ServerConnector$ServerConnectorManager.<init>(ServerConnector.java:600)
> at
> org.eclipse.jetty.server.ServerConnector.newSelectorManager(ServerConnector.java:223)
> at
> org.eclipse.jetty.server.ServerConnector.<init>(ServerConnector.java:216)
> at
> org.eclipse.jetty.server.ServerConnector.<init>(ServerConnector.java:98)
> at
> com.google.gwt.dev.codeserver.WebServer.start(WebServer.java:122)
> at
> com.google.gwt.dev.codeserver.CodeServer.start(CodeServer.java:162)
> at
> com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:104)
> at
> com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:55)
>
>
> We are using Gradle with the wisepersist GWT plugin:
>
> id "org.wisepersist.gwt" version "1.1.18"id "org.gretty" version "3.0.8"
>
> gwt {
>
> gwtVersion = "2.10.0" src +=
> files(compileJava.options.annotationProcessorGeneratedSourcesDirectory)
> logLevel = "INFO" maxHeapSize = "2048M";
> modules 'com.newsrx.butter.Butter' compiler {
> disableClassMetadata = false;
> strict = true;
> style = "OBF";
> } // allow sdm on simultaneous modules// devModules
> 'com.newsrx.butter.Butter', 'com.newsrx.newsletter.NewsletterBrowser',
> 'com.newsrx.dailies.DailiesBrowser' superDev { noPrecompile = false;
> failOnError = false;
> bindAddress = "0.0.0.0";
> }}
>
>
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