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https://issues.apache.org/jira/browse/LUCENE-2589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12896406#action_12896406
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Simon Willnauer commented on LUCENE-2589:
-----------------------------------------

{quote}Actually i would prefer we just fix LuceneTestCase etc so that each test 
class has a single static random seed, then there would be less parameters. 
Then we can change the failure message to just say 'reproduce with -D....' and 
I think it would be best.{quote}

A single random seed per TestCase / Class would make things way easier IMO and 
I would agree that we should have that per Class. Nevertheless, would that 
deprecate all parameters? When I want to use randomized tests but need to force 
a certain codec that wouldn't work. Anyway, a documentation of whatever we do 
here would help people new to lucene to get started with patches and test.

> Add a variable-sized int block codec
> ------------------------------------
>
>                 Key: LUCENE-2589
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2589
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 4.0
>
>         Attachments: LUCENE-2589.patch, LUCENE-2589.patch
>
>
> We already have support for fixed block size int block codecs, making it very 
> simple to create a codec from a int encoder algorithms like FOR/PFOR.
> But algorithms like Simple9/16 are not fixed -- they encode a variable number 
> of adjacent ints at once, depending on the specific values of those ints.

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