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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2013/01/04 15:52:12 UTC
[jira] [Assigned] (LUCENE-4660) When ConcurrentMergeScheduler
stalls incoming threads it has unexpected hysteresis
[ https://issues.apache.org/jira/browse/LUCENE-4660?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless reassigned LUCENE-4660:
------------------------------------------
Assignee: Michael McCandless
> When ConcurrentMergeScheduler stalls incoming threads it has unexpected hysteresis
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-4660
> URL: https://issues.apache.org/jira/browse/LUCENE-4660
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Attachments: LUCENE-4660.patch
>
>
> Eg if you set maxMergeCount to 2, as soon as a 3rd merge need to kick off, we stall incoming segment-creating threads. Then we wait ... and we are supposed to resume the threads when the merge count drops back to 2, but instead we are only resuming when merge count gets to 1. Ie, we stall for too long (= unexpected hysteresis).
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