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https://jira.duraspace.org/browse/DS-892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kevin Van de Velde reassigned DS-892:
-------------------------------------
Assignee: Kevin Van de Velde
> Performance issues in update enabling the StatisticsLoggingConsumer
> -------------------------------------------------------------------
>
> Key: DS-892
> URL: https://jira.duraspace.org/browse/DS-892
> Project: DSpace
> Issue Type: Bug
> Components: Solr
> Affects Versions: 1.6.0, 1.6.1, 1.6.2, 1.7.0, 1.7.1
> Reporter: Andrea Bollini
> Assignee: Kevin Van de Velde
> Priority: Critical
>
> We have found that enabling the StatisticsLoggingConsumer to keep statistics
> data up-to-date after item changes (metadata edit or collection
> moving/mapping) the item update operations become slowly and the system
> unusable.
> NOTE: the StatisticsLoggingConsumer is NOT enabled out-of-box in the
> dspace.cfg this imply that your statistics data could be incongruous (item
> access assigned to incorrect communities/collections)
> We noticed problems when there are large amount of statistics data (> 20M
> records), for small repository (< 1M statistics record) the overhead is
> acceptable.
> Finally, after the introduction of the autocommit patch, the
> StatisticsLoggingConsumer is not more able to assure the data consistence
> because the statistics data collected between two auto-commit are not
> processed by the class.
> Our current idea is to discard the consumer approach in favour to implement a
> batch tools to periodically analyze the statistics data and fix it as
> appropriate.
> This issue is a placeholder for such feature and discussion around it.
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