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https://issues.apache.org/jira/browse/SOLR-2282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stanislaw Osinski updated SOLR-2282:
------------------------------------

    Attachment: SOLR-2282-diagnostics.patch

Robert: I was using the random seed from the build result in the hope that it 
will fail the test for me. I'm still unable to get the exception though, with 
or without the seed. I suppose it shouldn't matter whether I run the complete 
test suite or just this one test method? (I was doing the latter to save time)

If you have a spare moment, would you be able check the following two things on 
your machine:

1. Apply the attached diagnostics patch and run the tests. If the test doesn't 
fail after the change, this means there's some concurrency issue in Carrot2's 
internal resource pooling mechanisms that we'll need to find. This patch is not 
a solution to the problem though, just a diagnostic measure.

2. It's paranoid, but can you run the test with the 
{{-Dargs=-XX:+TraceClassLoading}} option and check that there's no old (v3.4.0) 
Carrot2 JAR hiding in the bushes? Version 3.4.0 had a subtle bug that could be 
causing the exception. If there's no traces of Carrot2 3.4.0 JAR in the 
classpath, we'll need to do further inspection of our code.

> Distributed Support for Search Result Clustering
> ------------------------------------------------
>
>                 Key: SOLR-2282
>                 URL: https://issues.apache.org/jira/browse/SOLR-2282
>             Project: Solr
>          Issue Type: New Feature
>          Components: contrib - Clustering
>    Affects Versions: 1.4, 1.4.1
>            Reporter: Koji Sekiguchi
>            Assignee: Koji Sekiguchi
>            Priority: Minor
>             Fix For: 3.1, 4.0
>
>         Attachments: SOLR-2282-diagnostics.patch, SOLR-2282.patch, 
> SOLR-2282.patch, SOLR-2282.patch, SOLR-2282.patch, SOLR-2282.patch, 
> SOLR-2282_test.patch
>
>
> Brad Giaccio contributed a patch for this in SOLR-769. I'd like to 
> incorporate it.

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