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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3235) TestDoubleBarrelLRUCache hangs under Java 1.5, 3.x and trunk, likely JVM bug
Date Fri, 24 Jun 2011 10:12:47 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054336#comment-13054336
] 

Robert Muir commented on LUCENE-3235:
-------------------------------------

Mike, i installed 1.5.0_22 (amd64) on my linux machine, and i can't reproduce there either
(i ran like 500 iterations).

Maybe my hardware isn't concurrent enough? or maybe you should un-overclock? :)

> 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
>            Reporter: Michael McCandless
>
> 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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