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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 Thu, 23 Jun 2011 20:06:47 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054070#comment-13054070
] 

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

i ran the test with the same version as mike (1.5.0_22) in two ways on windows:
* -Dtests.iter=100
* in a loop from a script, 100 times with its own ant run.

i can't reproduce it on windows.

in my eyes, there isn't even an argument about whether or not we should support java5: its
not possible, if bugs are not getting fixed.

> 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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