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https://issues.apache.org/jira/browse/SOLR-6359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15214361#comment-15214361
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Yonik Seeley commented on SOLR-6359:
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bq. Maybe I misunderstand the impacts of these configuration options, but why
even have a maxNumLogsToKeep? i.e. why isn't it effectively unlimited?
The reason for having a different number internally has to do with current
implementation details and practical system limits. Each log file is kept
open, hence the edge case where someone does add,commit,add,commit over and
over will run the system out of file descriptors if num records to keep is high.
> Allow customization of the number of records and logs kept by UpdateLog
> -----------------------------------------------------------------------
>
> Key: SOLR-6359
> URL: https://issues.apache.org/jira/browse/SOLR-6359
> Project: Solr
> Issue Type: Improvement
> Reporter: Ramkumar Aiyengar
> Assignee: Ramkumar Aiyengar
> Priority: Minor
> Fix For: 5.1, master
>
> Attachments: SOLR-6359.patch
>
>
> Currently {{UpdateLog}} hardcodes the number of logs and records it keeps,
> and the hardcoded numbers (100 records, 10 logs) can be quite low (esp. the
> records) in an heavily indexing setup, leading to full recovery even if Solr
> was just stopped and restarted.
> These values should be customizable (even if only present as expert options).
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