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https://issues.apache.org/jira/browse/LUCENE-8392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16538167#comment-16538167
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ASF subversion and git services commented on LUCENE-8392:
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Commit 43481f26db0afe9d9ad39013e0ff6ae76308d643 in lucene-solr's branch
refs/heads/branch_7x from [~jpountz]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=43481f2 ]
LUCENE-8392: Avoir corner cases when maxMergeAtOnce is greater than
segmentsPerTier.
> TieredMergePolicy has broken assumptions when maxMergeAtOnce is greater than
> segmentsPerTier
> --------------------------------------------------------------------------------------------
>
> Key: LUCENE-8392
> URL: https://issues.apache.org/jira/browse/LUCENE-8392
> Project: Lucene - Core
> Issue Type: Test
> Reporter: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-8392.patch
>
>
> While working on LUCENE-8391 I had test failures when {{maxMergeAtOnce}} is
> larger than {{segmentsPerTier}}. For instance when all segments are on the
> same tier, the maximum number of segments that is allowed in the index is
> {{segmentsPerTier}} but because the tiered policy wants to find
> {{maxMergeAtOnce}} segments to merge, no segments will get merged if there
> are less than {{maxMergeAtOnce}} segments.
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