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https://issues.apache.org/jira/browse/WW-3580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093699#comment-13093699
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Maurizio Cucchiara commented on WW-3580:
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Ciao Alessio,
we (the OGNL team) are going to work on this.
It would be very useful for me to know if you guys are able to systematically
reproduce the issue or alternatively whether there are particular conditions
under which the deadlock occurrs.
> Critical performance issue in production environment as thread dumps are
> leading to OGNL 3.0 thread blocking! Website could be backed out!
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: WW-3580
> URL: https://issues.apache.org/jira/browse/WW-3580
> Project: Struts 2
> Issue Type: Bug
> Environment: Struts 2.2.1
> Reporter: Shishir Saxena
> Priority: Blocker
> Attachments: OGNLIssue.zip, stacktrace_ognl_issue.txt
>
>
> My web application based on Struts 2.2.1 is using OGNL 3.0. This web
> application is rolled into production; however, due to serious performance
> considerations the website is in danger of being rolled back. The thread
> dumps indicate 'BLOCKING' at
> ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:804).
> The thread trace is as:
> "httpSSLWorkerThread-6357-6" daemon prio=3 tid=0x01a07000 nid=0xa6
> waiting for monitor entry [0xb6d79000..0xb6d7faf0]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:804)
> - waiting to lock <0xcca6d328> (a java.lang.reflect.Method)
> at ognl.OgnlRuntime.getMethodValue(OgnlRuntime.java:1434)
> at
> ognl.ObjectPropertyAccessor.getPossibleProperty(ObjectPropertyAccessor.java:60)
> at ognl.ObjectPropertyAccessor.getProperty(ObjectPropertyAccessor.java:147)
> at
> com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.getProperty(ObjectAccessor.java:17)
> at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2230)
> at
> com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.getProperty(CompoundRootAccessor.java:137)
> at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2230)
> at ognl.ASTProperty.getValueBody(ASTProperty.java:114)
> at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
> at ognl.SimpleNode.getValue(SimpleNode.java:258)
> at ognl.Ognl.getValue(Ognl.java:494)
> at ognl.Ognl.getValue(Ognl.java:458)
> at com.opensymphony.xwork2.ognl.OgnlUtil.getValue(OgnlUtil.java:213)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.getValueUsingOgnl(OgnlValueStack.java:277)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.tryFindValue(OgnlValueStack.java:260)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.tryFindValueWhenExpressionIsNotNull(OgnlValueStack.java:242)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.findValue(OgnlValueStack.java:222)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.findValue(OgnlValueStack.java:284)
> at sun.reflect.GeneratedMethodAccessor111.invoke(Unknown Source)
> ....
> quot;httpSSLWorkerThread-6357-4" daemon prio=3 tid=0x01a56800 nid=0xa4
> runnable [0xb6f79000..0xb6f7fbf0]
> java.lang.Thread.State: RUNNABLE
> at java.security.AccessController.$$YJP$$doPrivileged(Native Method)
> at java.security.AccessController.doPrivileged(AccessController.java)
> at
> com.sun.enterprise.security.provider.PolicyFile.addPermissions(PolicyFile.java:1333)
> at
> com.sun.enterprise.security.provider.PolicyFile.getPermissions(PolicyFile.java:1290)
> at
> com.sun.enterprise.security.provider.PolicyFile.getPermissions(PolicyFile.java:1256)
> at
> com.sun.enterprise.security.provider.PolicyFile.getPermissions(PolicyFile.java:1198)
> at
> com.sun.enterprise.security.provider.PolicyFile.implies(PolicyFile.java:1153)
> at
> com.sun.enterprise.security.provider.BasePolicyWrapper.doImplies(BasePolicyWrapper.java:383)
> at
> com.sun.enterprise.security.provider.BasePolicyWrapper.implies(BasePolicyWrapper.java:237)
> at java.security.ProtectionDomain.implies(ProtectionDomain.java:213)
> at
> java.security.AccessControlContext.checkPermission(AccessControlContext.java:301)
> at java.security.AccessController.checkPermission(AccessController.java:546)
> at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
> at java.lang.reflect.AccessibleObject.setAccessible(AccessibleObject.java:107)
> at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:839)
> - locked <0xcca6d328> (a java.lang.reflect.Method)
> at ognl.OgnlRuntime.getMethodValue(OgnlRuntime.java:1434)
> at
> ognl.ObjectPropertyAccessor.getPossibleProperty(ObjectPropertyAccessor.java:60)
>
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