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https://issues.apache.org/jira/browse/LUCENE-9580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17559043#comment-17559043
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ASF subversion and git services commented on LUCENE-9580:
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Commit 6a3f50539587cdabe5efe199bc06f6375f1d092a in lucene-solr's branch
refs/heads/branch_8_11 from Hugo Mercier
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=6a3f5053958 ]
LUCENE-9580: Fix bug in the polygon tessellator when introducing collinear
edges during polygon splitting (#2452) (#2664)
Co-authored-by: Ignacio Vera <iv...@apache.org>
> Tessellator failure for a certain polygon
> -----------------------------------------
>
> Key: LUCENE-9580
> URL: https://issues.apache.org/jira/browse/LUCENE-9580
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 8.5, 8.6
> Reporter: Iurii Vyshnevskyi
> Assignee: Ignacio Vera
> Priority: Major
> Fix For: 9.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> This bug was discovered while using ElasticSearch (checked with versions
> 7.6.2 and 7.9.2).
> But I've created an isolated test case just for Lucene:
> [https://github.com/apache/lucene-solr/pull/2006/files]
>
> The unit test fails with "java.lang.IllegalArgumentException: Unable to
> Tessellate shape".
>
> The polygon contains two holes that share the same vertex and one more
> standalone hole.
> Removing any of them makes the unit test pass.
>
> Changing the least significant digit in any coordinate of the "common vertex"
> in any of two first holes, so that these vertices become different in each
> hole - also makes unit test pass.
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