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https://issues.apache.org/jira/browse/LUCENE-9820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17450251#comment-17450251
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ASF subversion and git services commented on LUCENE-9820:
---------------------------------------------------------

Commit 62084d7138808887783199b4256fc3eee794355e in lucene's branch 
refs/heads/branch_9x from Ignacio Vera
[ https://gitbox.apache.org/repos/asf?p=lucene.git;h=62084d7 ]

LUCENE-10264: Clone index input when creating a PointTree in 
SimpleTextBKDReader (#478)

Fixes a race condition introduced in LUCENE-9820.

> Separate logic for reading the BKD index from logic to intersecting it.
> -----------------------------------------------------------------------
>
>                 Key: LUCENE-9820
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9820
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Ignacio Vera
>            Assignee: Ignacio Vera
>            Priority: Major
>             Fix For: 9.1
>
>          Time Spent: 12h 20m
>  Remaining Estimate: 0h
>
> Currently the class BKDReader contains all the logic for traversing the KD 
> tree and the logic to read the actual index. This makes difficult to develop 
> new visiting strategies, for example LUCENE-9619, where it is proposed to 
> move Points from a visitor API to a custor-style API.
> The first step is to isolate the logic the read the index from the logic that 
> visits the the tree. Another benefit of doing this, is that it will help 
> evolving the index, for example moving the current index format to backwards 
> codec without moving the visiting logic.



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