[GROOVY-5019] Deadlock in groovy.lang.MetaClassImpl under heavy concurrent load

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Won't Fix
• Affects Version/s: 1.7.10
• Component/s: Groovysh
• Assignee: Unassigned
• Reporter: Peter Liljenberg
• Created: 14/Sep/11 08:45
• Updated: 11/Sep/12 01:15
• Resolved: 04/Sep/12 03:52

Description

Sometimes we run into deadlocks in groovy shell. Looking at the threaddump below we see that threads pool-1-thread-1103 and pool-1-thread-1104 are deadlocked. I've looked in the issue list and similar issues looks be resolved but we're still experiencing it (for example GROOVY-4050).
The calls are made to different instance of GroovyShell.

"pool-1-thread-1104" - Thread t@219188
   java.lang.Thread.State: BLOCKED on java.beans.PropertyDescriptor@3db8a1e8 owned by: pool-1-thread-1103
        at java.beans.PropertyDescriptor.getReadMethod(Unknown Source)
        at java.beans.Introspector.processPropertyDescriptors(Unknown Source)
        at java.beans.Introspector.getTargetPropertyInfo(Unknown Source)
        at java.beans.Introspector.getBeanInfo(Unknown Source)
        at java.beans.Introspector.getBeanInfo(Unknown Source)
        - locked java.lang.Object@5f70bea5
        at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:2940)
        at java.security.AccessController.doPrivileged(Native Method)
        at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:2938)
        at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:2921)
        - locked groovy.lang.MetaClassImpl@4426073e
        at org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:166)
        at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:182)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:210)
        at org.codehaus.groovy.runtime.InvokerHelper.getMetaClass(InvokerHelper.java:751)
        at groovy.lang.GroovyObjectSupport.<init>(GroovyObjectSupport.java:32)
        at groovy.lang.Script.<init>(Script.java:40)
        at groovy.lang.Script.<init>(Script.java:37)
        at Script1.<init>(Script1.groovy)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at java.lang.Class.newInstance0(Unknown Source)
        at java.lang.Class.newInstance(Unknown Source)
        at org.codehaus.groovy.runtime.InvokerHelper.createScript(InvokerHelper.java:408)
        at groovy.lang.GroovyShell.parse(GroovyShell.java:743)
        at groovy.lang.GroovyShell.evaluate(GroovyShell.java:578)
        at groovy.lang.GroovyShell.evaluate(GroovyShell.java:618)
        at groovy.lang.GroovyShell.evaluate(GroovyShell.java:589)


-------

"pool-1-thread-1103" - Thread t@219187
   java.lang.Thread.State: BLOCKED on java.lang.Object@5f70bea5 owned by: pool-1-thread-1104
        at java.beans.Introspector.getPublicDeclaredMethods(Unknown Source)
        at java.beans.Introspector.internalFindMethod(Unknown Source)
        at java.beans.Introspector.findMethod(Unknown Source)
        at java.beans.Introspector.findMethod(Unknown Source)
        at java.beans.PropertyDescriptor.getReadMethod(Unknown Source)
        - locked java.beans.PropertyDescriptor@3db8a1e8
        at groovy.lang.MetaClassImpl.applyPropertyDescriptors(MetaClassImpl.java:2215)
        at groovy.lang.MetaClassImpl.setupProperties(MetaClassImpl.java:1995)
        at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:2950)
        at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:2921)
        - locked groovy.lang.MetaClassImpl@71ea1b61
        at org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:166)
        at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:182)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.getMetaClass(MetaClassRegistryImpl.java:210)
        at org.codehaus.groovy.runtime.InvokerHelper.getMetaClass(InvokerHelper.java:751)
        at groovy.lang.GroovyObjectSupport.<init>(GroovyObjectSupport.java:32)
        at groovy.lang.Script.<init>(Script.java:40)
        at groovy.lang.Script.<init>(Script.java:37)
        at Script1.<init>(Script1.groovy)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at java.lang.Class.newInstance0(Unknown Source)
        at java.lang.Class.newInstance(Unknown Source)
        at org.codehaus.groovy.runtime.InvokerHelper.createScript(InvokerHelper.java:408)
        at groovy.lang.GroovyShell.parse(GroovyShell.java:743)
        at groovy.lang.GroovyShell.evaluate(GroovyShell.java:578)
        at groovy.lang.GroovyShell.evaluate(GroovyShell.java:618)
        at groovy.lang.GroovyShell.evaluate(GroovyShell.java:589)