[ 
https://issues.apache.org/jira/browse/LUCENE-2989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13010688#comment-13010688
 ] 

Robert Muir commented on LUCENE-2989:
-------------------------------------

{noformat}
junit-sequential:
    [junit] Testsuite: org.apache.lucene.util.TestCollectionUtil
    [junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0.173 sec
    [junit]
    [junit] ------------- Standard Error -----------------
    [junit] NOTE: reproduce with: ant test -Dtestcase=TestCollectionUtil 
-Dtestmethod=testEmptyArraySort 
-Dtests.seed=7789232519167372758:-4267884142251261003
    [junit] NOTE: test params are: codec=PreFlex, locale=fr_CH, 
timezone=America/Nassau
    [junit] NOTE: all tests run in this JVM:
    [junit] [TestCollectionUtil]
    [junit] NOTE: Windows Vista 6.0 build 6002 Service Pack 2 x86/IBM 
Corporation 1.6.0 (32-bit)/cpus=4,threads=2,free=374312,total=4194304
    [junit] ------------- ---------------- ---------------
    [junit] Testcase: 
testEmptyArraySort(org.apache.lucene.util.TestCollectionUtil):    Caused an 
ERROR
    [junit] CollectionUtil can only sort random access lists in-place.
    [junit] java.lang.IllegalArgumentException: CollectionUtil can only sort 
random access lists in-place.
    [junit]     at 
org.apache.lucene.util.CollectionUtil.getSorter(CollectionUtil.java:70)
    [junit]     at 
org.apache.lucene.util.CollectionUtil.quickSort(CollectionUtil.java:113)
    [junit]     at 
org.apache.lucene.util.TestCollectionUtil.testEmptyArraySort(TestCollectionUtil.java:95)
    [junit]     at 
org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:1214)
    [junit]     at 
org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:1146)
    [junit]
    [junit]
    [junit] Test org.apache.lucene.util.TestCollectionUtil FAILED
{noformat}

> TestCollectionUtil fails on IBM JRE
> -----------------------------------
>
>                 Key: LUCENE-2989
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2989
>             Project: Lucene - Java
>          Issue Type: Bug
>         Environment: java version "1.6.0"
> Java(TM) SE Runtime Environment (build pwi3260sr1-20080416_01(SR1))
> IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Windows Vista x86-32 
> jvmwi3260-20080415_18762 (JIT enabled, AOT enabled)
> J9VM - 20080415_018762_lHdSMr
> JIT  - r9_20080415_1520
> GC   - 20080415_AA)
> JCL  - 20080412_01
>            Reporter: Robert Muir
>
>     [junit] Testcase: 
> testEmptyArraySort(org.apache.lucene.util.TestCollectionUtil):    Caused an 
> ERROR
>     [junit] CollectionUtil can only sort random access lists in-place.

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