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https://issues.apache.org/jira/browse/LUCENE-7120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15203956#comment-15203956
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ASF subversion and git services commented on LUCENE-7120:
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Commit 551cf750569d41103207d607c497233f436c32cc in lucene-solr's branch
refs/heads/branch_6x from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=551cf75 ]
LUCENE-7120: re-use readers while recursing in BKDWriter so we get more
thorough checksum verification on its temp files
> Improve BKDWriter's checksum verification
> -----------------------------------------
>
> Key: LUCENE-7120
> URL: https://issues.apache.org/jira/browse/LUCENE-7120
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: master, 6.1
>
> Attachments: LUCENE-7120.patch
>
>
> The checksum verification only works when {{BKDWriter}} fully reads one of
> its temp files, but today it opens a reader, seeks to one slice, reads that,
> and closes.
> But it turns out, on the full recursion from any given node in the tree, a
> given file is read once, fully, so if we just share the readers, then we can
> get checksum verification for these files as well.
> This is a non-trivial change ... I don't plan on pushing it for 6.0.
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