Ick. Version? 2009/12/10 Johann.Weber <[email protected]>: > Hi all, > > > > Recently I've noticed a high cpu load on my machine. The problem was a > thread caught in the while loop from the HashMap class. > > Here is the stacktrace: > > > > java.lang.Thread.State: RUNNABLE > > at java.util.HashMap.get(Unknown Source) > > at > org.apache.velocity.util.introspection.ClassMap$MethodCache.get(ClassMap > .java:249) > > at > org.apache.velocity.util.introspection.ClassMap.findMethod(ClassMap.java > :102) > > at > org.apache.velocity.util.introspection.IntrospectorBase.getMethod(Intros > pectorBase.java:105) > > at > org.apache.velocity.util.introspection.Introspector.getMethod(Introspect > or.java:94) > > at > org.apache.velocity.runtime.parser.node.PropertyExecutor.discover(Proper > tyExecutor.java:99) > > at > org.apache.velocity.runtime.parser.node.PropertyExecutor.<init>(Property > Executor.java:56) > > at > org.apache.velocity.util.introspection.UberspectImpl.getPropertyGet(Uber > spectImpl.java:246) > > at > org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentif > ier.java:148) > > at > org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReferenc > e.java:252) > > at > org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReferen > ce.java:460) > > at > org.apache.velocity.runtime.parser.node.ASTExpression.evaluate(ASTExpres > sion.java:62) > > at > org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfState > ment.java:85) > > at > org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.jav > a:336) > > at > org.apache.velocity.runtime.directive.Parse.render(Parse.java:260) > > at > org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective > .java:175) > > at > org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.jav > a:336) > > at > org.apache.velocity.runtime.directive.Parse.render(Parse.java:260) > > at > org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective > .java:175) > > at > org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.jav > a:336) > > at org.apache.velocity.Template.merge(Template.java:328) > > > > It seems that the reason is concurrent access to the get and put methods > of HashMap which are not synchronized. Is this the problem? > > > > Best Regards, > > Johann > >
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