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From "Uwe Schindler (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3927) allow running trunk tests with IBM JRE
Date Tue, 27 Mar 2012 07:21:39 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13239271#comment-13239271
] 

Uwe Schindler commented on LUCENE-3927:
---------------------------------------

This bug in IBM JDK goes back to Apache Harmony, where you can see how the SPI code is implemented.
It uses a HashMap instead of LinkedHashMap as lookup cache and that mixes the SPI classes
up. This is a bug, but unfortunately the API is not clear about that.

Maybe we add a "override" option to SPILoader, so you can force NamedSPILoader to return a
specific impl, ignoring the classpath? By this we can override the "Lucene3x" codec to be
"new PreflexRWCodec()" programmatically.
                
> allow running trunk tests with IBM JRE
> --------------------------------------
>
>                 Key: LUCENE-3927
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3927
>             Project: Lucene - Java
>          Issue Type: Task
>          Components: general/test
>    Affects Versions: 4.0
>            Reporter: Robert Muir
>         Attachments: LUCENE-3927.patch
>
>
> This is currently not possible because of how the SPI loader works,
> we cannot simulate Lucene3x codec with PreFlexRWCodec.
> But we should still allow basic testing (even though we cannot test preflex).
> After hacking around the issue, I get interesting fails with this JRE so I think its
worth it.

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