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Date: Tue, 15 Nov 2011 23:21:51 +0000 (UTC)
From: "Uwe Schindler (Issue Comment Edited) (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Issue Comment Edited] (LUCENE-3235)
 TestDoubleBarrelLRUCache hangs under Java 1.5, 3.x and trunk, likely JVM
 bug
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    [ https://issues.apache.org/jira/browse/LUCENE-3235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13150878#comment-13150878 ] 

Uwe Schindler edited comment on LUCENE-3235 at 11/15/11 11:21 PM:
------------------------------------------------------------------

This ois the way to get the runtime args: [http://download.oracle.com/javase/1.5.0/docs/api/java/lang/management/RuntimeMXBean.html#getInputArguments()]:

{code:java}
RuntimeMXBean m = ManagementFactory.getRuntimeMXBean();
List<String> vmargs = getInputArguments();
{code}
                
      was (Author: thetaphi):
    This ois the way to get the runtime args: [http://download.oracle.com/javase/1.5.0/docs/api/java/lang/management/RuntimeMXBean.html#getInputArguments()]
                  
> TestDoubleBarrelLRUCache hangs under Java 1.5, 3.x and trunk, likely JVM bug
> ----------------------------------------------------------------------------
>
>                 Key: LUCENE-3235
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3235
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 3.0, 3.1, 3.2, 3.3, 3.4
>            Reporter: Michael McCandless
>             Fix For: 3.5
>
>         Attachments: LUCENE-3235.patch, LUCENE-3235.patch, LUCENE-3235.patch
>
>
> Not sure what's going on yet... but under Java 1.6 it seems not to hang bug under Java 1.5 hangs fairly easily, on Linux.  Java is 1.5.0_22.
> I suspect this is relevant: http://stackoverflow.com/questions/3292577/is-it-possible-for-concurrenthashmap-to-deadlock which refers to this JVM bug http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6865591 which then refers to this one http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6822370
> It looks like that last bug was fixed in Java 1.6 but not 1.5.

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