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From "Gary Gregory (JIRA)" <>
Subject [jira] [Commented] (BEANUTILS-509) WeakHashmap enters into infinite loop in
Date Sat, 06 Oct 2018 14:36:00 GMT


Gary Gregory commented on BEANUTILS-509:

Weird: When I run a build with Maven and all the test or only the one test, the test times
out and the build fails: mvn clean test -Dtest=Jira509TestCase.

When I run the test from Eclipse, it completes in 12 seconds. My loop boundary is set to 10_000_000.

> WeakHashmap enters into infinite loop in
> -----------------------------------------------------------
>                 Key: BEANUTILS-509
>                 URL:
>             Project: Commons BeanUtils
>          Issue Type: Bug
>          Components: DynaBean
>    Affects Versions: 1.8.2
>            Reporter: sunil
>            Priority: Major
>         Attachments: WrapDynaCache.patch, WrapDynaCache_after_svn_commit.patch, console.log.backup
> We noticed that our application was using too much of CPU , all the 6 cores were used. 
> On capturing the thread dump we saw that large number of threads were in the running
state and in :
> at java.util.WeakHashMap.get(
>  at org.apache.commons.beanutils.WrapDynaClass.createDynaClass(
> So we are suspecting that the thread has entered into indefinite while loop and hogging
all the CPU resources.
> I have attached the thread dump for reference.  
> what is the solution for this issue?

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