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https://issues.apache.org/jira/browse/GROOVY-8160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15980392#comment-15980392
]
Michael W commented on GROOVY-8160:
-----------------------------------
After bisecting it seems like this commit fixed the issue for the 2.5.0-alpha-1
release:
https://github.com/apache/groovy/commit/8fa53f52187e10cfa184f4e2ff1556ef5db66765
Unfortunately it is not included in the 2.4.X branch.
> Exception when evaluating two Groovy scripts containing an enum in parallel
> ---------------------------------------------------------------------------
>
> Key: GROOVY-8160
> URL: https://issues.apache.org/jira/browse/GROOVY-8160
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.4.10
> Environment: openjdk version "1.8.0_111"
> OpenJDK Runtime Environment (build 1.8.0_111-8u111-b14-2~bpo8+1-b14)
> OpenJDK 64-Bit Server VM (build 25.111-b14, mixed mode)
> Reporter: Michael W
>
> It appears like a concurrent invocation of GroovyShell.evaluate results in a
> exception if the evaluated script contains an enum.
> The following code reproduces this issue:
> {code}import groovy.lang.GroovyShell;
> import java.util.concurrent.ExecutorService;
> import java.util.concurrent.Executors;
> import java.util.concurrent.TimeUnit;
> public class MyReproducer {
> public static void main(String [] args) throws InterruptedException {
> // Uncomment this and the problem will go away
> //runScript();
> ExecutorService es = Executors.newFixedThreadPool(2);
> es.execute(MyReproducer::runScript);
> es.execute(MyReproducer::runScript);
> es.shutdown();
> es.awaitTermination(10, TimeUnit.SECONDS);
> }
> private static void runScript() {
> GroovyShell shell = new GroovyShell();
> shell.evaluate("enum MyEnum {FOO, BAR, BAZ}\nprintln
> MyEnum.values()");
> }
> }{code}
> Exception thrown: {noformat}Exception in thread "pool-1-thread-1"
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Script1.groovy: -1: unable to resolve class java$lang$Enum
> @ line -1, column -1.
> 1 error
> at
> org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
> at
> org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:958)
> at
> org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:605)
> at
> org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:554)
> at
> groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
> at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
> at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
> at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:584)
> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:623)
> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:594)
> at MyReproducer.runScript(MyReproducer.java:23)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Exception in thread "pool-1-thread-2" java.lang.ExceptionInInitializerError
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:348)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray$1.run(CallSiteArray.java:68)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray$1.run(CallSiteArray.java:65)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallStaticSite(CallSiteArray.java:65)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallSite(CallSiteArray.java:162)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
> at Script1.run(Script1.groovy:2)
> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:585)
> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:623)
> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:594)
> at MyReproducer.runScript(MyReproducer.java:23)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.TypeNotPresentException: Type java$lang$Enum not present
> at
> sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117)
> at
> sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125)
> at
> sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
> at
> sun.reflect.generics.repository.ClassRepository.getSuperclass(ClassRepository.java:90)
> at java.lang.Class.getGenericSuperclass(Class.java:777)
> at com.sun.beans.TypeResolver.prepare(TypeResolver.java:308)
> at com.sun.beans.TypeResolver.resolve(TypeResolver.java:185)
> at com.sun.beans.TypeResolver.resolve(TypeResolver.java:218)
> at com.sun.beans.TypeResolver.resolve(TypeResolver.java:169)
> at com.sun.beans.TypeResolver.resolveInClass(TypeResolver.java:81)
> at
> java.beans.FeatureDescriptor.getReturnType(FeatureDescriptor.java:370)
> at
> java.beans.PropertyDescriptor.findPropertyType(PropertyDescriptor.java:648)
> at
> java.beans.PropertyDescriptor.updateGenericsFor(PropertyDescriptor.java:623)
> at java.beans.Introspector.addPropertyDescriptor(Introspector.java:605)
> at java.beans.Introspector.addPropertyDescriptors(Introspector.java:614)
> at java.beans.Introspector.getTargetPropertyInfo(Introspector.java:467)
> at java.beans.Introspector.getBeanInfo(Introspector.java:428)
> at java.beans.Introspector.getBeanInfo(Introspector.java:173)
> at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:3318)
> at java.security.AccessController.doPrivileged(Native Method)
> at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:3316)
> at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:3293)
> at
> org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:260)
> at
> org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:302)
> at
> org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:261)
> at
> org.codehaus.groovy.runtime.InvokerHelper.getMetaClass(InvokerHelper.java:883)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallStaticSite(CallSiteArray.java:75)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallStatic(CallSiteArray.java:56)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:194)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:214)
> at MyEnum.<clinit>(Script1.groovy)
> ... 18 more
> Caused by: java.lang.ClassNotFoundException: java$lang$Enum
> at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:677)
> at
> groovy.lang.GroovyClassLoader$InnerLoader.loadClass(GroovyClassLoader.java:425)
> at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:787)
> at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:775)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:348)
> at
> sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
> ... 48 more{noformat}
> The problem doesn't occur if a script containing an enum declaration was
> evaluated before. Also every once in a while everything works fine and no
> error occurs.
> Please note: I was unable to reproduce this problem with 2.5.0-alpha-1 but
> since I didn't find a mention of this bug in the changelog I figured that I
> should report it nevertheless.
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