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Date: Tue, 19 Apr 2011 18:04:05 +0000 (UTC)
From: "Dawid Weiss (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Issue Comment Edited] (LUCENE-3037) TestFSTs.testRealTerms
 produces a corrupt index
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    [ https://issues.apache.org/jira/browse/LUCENE-3037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13021690#comment-13021690 ] 

Dawid Weiss edited comment on LUCENE-3037 at 4/19/11 6:03 PM:
--------------------------------------------------------------

I don't know how applicable is this, but 
{noformat}floor(log(n)/log(m)) = p{noformat}
can be transformed into a simple equation: find first 'p' for which n <= m^p is true. Assuming m^p grows quickly, this can be computed in a tight loop, quite fast and with an exact result.

      was (Author: dweiss):
    I don't know how applicable is this, but floor(log(n)/log(m)) = p can be transformed into a simple equation: find first 'p' for which n <= m^p is true. Assuming m^p grows quickly, this can be computed in a tight loop, quite fast and with an exact result.
  
> TestFSTs.testRealTerms produces a corrupt index
> -----------------------------------------------
>
>                 Key: LUCENE-3037
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3037
>             Project: Lucene - Java
>          Issue Type: Bug
>            Reporter: Robert Muir
>             Fix For: 4.0
>
>         Attachments: LUCENE-3037.patch, LUCENE-3037_test.patch, index.7z.001, index.7z.002, index.7z.003
>
>
> seems to be prox/skip related: the test passes, but the checkindex upon closing fails.
> ant test-core -Dtestcase=TestFSTs -Dtests.seed=-4012305283315171209:0 -Dtests.multiplier=3 -Dtests.nightly=true -Dtests.linedocsfile=c:/data/enwiki.random.lines.txt.gz
> Note: to get the enwiki.random.lines.txt.gz you have to fetch it from hudson (warning 1 gigabyte file).
> you also have to run the test a few times to trigger it.
> ill upload the index this thing makes to this issue.

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