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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2018/07/10 07:31:00 UTC
[jira] [Resolved] (LUCENE-8392) TieredMergePolicy has broken
assumptions when maxMergeAtOnce is greater than segmentsPerTier
[ https://issues.apache.org/jira/browse/LUCENE-8392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand resolved LUCENE-8392.
----------------------------------
Resolution: Fixed
Fix Version/s: 7.5
master (8.0)
> 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
> Fix For: master (8.0), 7.5
>
> 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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