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https://issues.apache.org/jira/browse/LUCENE-5612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13972652#comment-13972652
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Robert Muir commented on LUCENE-5612:
-------------------------------------

I think we should have a test running this thing with multiple processes. 

One way would be with the smoketester as a start. Better would be a java unit 
test that spawns processes (like TestIndexWriterOnJRECrash)

> LockStressTest fails always with NativeFSLockFactory
> ----------------------------------------------------
>
>                 Key: LUCENE-5612
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5612
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>
> I was looking at this, because i wanted to remove the static map inside 
> NativeFSLockFactory (no particular reason: it just smells bad, we require 
> java7, and you get overlappingexception as of java6 so its unnecessary).
> Before changing any code, i wanted to run lockstresstest first, just to 
> ensure it works: but it fails always. Simple works fine always.
> Exception in thread "main" java.lang.RuntimeException: 
> java.lang.RuntimeException: lock was double acquired at 
> org.apache.lucene.store.VerifyingLockFactory$CheckedLock.verify(VerifyingLockFactory.java:67)



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