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https://issues.apache.org/jira/browse/LUCENE-9206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17031060#comment-17031060
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ASF subversion and git services commented on LUCENE-9206:
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Commit 93b83f635dffc782dc70174e5ea377ceab6a8174 in lucene-solr's branch
refs/heads/master from Robert Muir
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=93b83f6 ]
LUCENE-9206: Improve IndexMergeTool defaults and options
IndexMergeTool previously had no options and always forceMerge(1)
the resulting index. This can result in wasted work and confusing
performance (unbalancing the index).
Instead the default is to not do anything, except merges from the
merge policy.
> improve IndexMergeTool
> ----------------------
>
> Key: LUCENE-9206
> URL: https://issues.apache.org/jira/browse/LUCENE-9206
> Project: Lucene - Core
> Issue Type: Task
> Components: general/tools
> Reporter: Robert Muir
> Priority: Major
> Attachments: LUCENE-9206.patch
>
>
> This tool can have performance problems since it will only force merge the
> index down to one segment. Let's give it some better options and default
> behavior.
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