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https://issues.apache.org/jira/browse/VELOCITY-669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Byron Foster resolved VELOCITY-669.
-----------------------------------
Resolution: Fixed
> Concurrency bug introduced in 1.7-dev
> -------------------------------------
>
> Key: VELOCITY-669
> URL: https://issues.apache.org/jira/browse/VELOCITY-669
> Project: Velocity
> Issue Type: Bug
> Affects Versions: 1.7
> Reporter: Jarkko Viinamäki
> Priority: Blocker
>
> Warning: current SVN head is broken - it fails under heavy load. I don't have
> time to investigate right now but 1.6.1 release version does not have this
> bug (1.6.2 release candidate may have it! - I'm not sure what's included
> there). However, current SVN head fails consistently with my load testing
> suite when I run it under JRat profiling:
> -------------------------------------------------------------------------------
> Test set: org.apache.velocity.test.load.Velocity24LoadTest
> -------------------------------------------------------------------------------
> Tests run: 250, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 71.032 sec
> <<< FAILURE!
> testRendering(org.apache.velocity.test.load.Velocity24Test) Time elapsed:
> 0.125 sec <<< ERROR!
> java.lang.NullPointerException
> at java.io.Writer.write(Writer.java:110)
> at
> org.apache.velocity.runtime.parser.node.ASTText.render_$jrat(ASTText.java:83)
> at org.apache.velocity.runtime.parser.node.ASTText.render(ASTText.java)
> at
> org.apache.velocity.runtime.parser.node.ASTBlock.render_$jrat(ASTBlock.java:72)
> at
> org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java)
> at
> org.apache.velocity.runtime.directive.VelocimacroProxy.render_$jrat(VelocimacroProxy.java:222)
> at
> org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java)
> at
> org.apache.velocity.runtime.directive.RuntimeMacro.render_$jrat(RuntimeMacro.java:295)
> at
> org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java)
> at
> org.apache.velocity.runtime.directive.RuntimeMacro.render_$jrat(RuntimeMacro.java:215)
> at
> org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java)
> at
> org.apache.velocity.runtime.parser.node.ASTDirective.render_$jrat(ASTDirective.java:198)
> at
> org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java)
> at
> org.apache.velocity.runtime.parser.node.SimpleNode.render_$jrat(SimpleNode.java:342)
> at
> org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java)
> at org.apache.velocity.Template.merge_$jrat(Template.java:340)
> at org.apache.velocity.Template.merge(Template.java)
> at org.apache.velocity.Template.merge_$jrat(Template.java:248)
> at org.apache.velocity.Template.merge(Template.java)
> at
> org.apache.velocity.test.load.Velocity24Test.testRendering_$jrat(Velocity24Test.java:52)
> at
> org.apache.velocity.test.load.Velocity24Test.testRendering(Velocity24Test.java)
> Although I'm not sure, I strongly suspect that this has got something to do
> with refactoring done (2009-01-11) for VelocimacroProxy.init. In 1.6.1 the
> init function initializes the nodeTree variable but if I'm not mistaken, in
> current SVN head this does not happen(!). It seems that under certain
> conditions the engine tries to render an ASTText node that has not been
> initialized (char array is null) which causes this exception.
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