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https://issues.apache.org/jira/browse/OAK-6187?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Mueller updated OAK-6187:
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Fix Version/s: (was: 1.8)
1.10
> Index usage analysis (which index was used when and how)
> --------------------------------------------------------
>
> Key: OAK-6187
> URL: https://issues.apache.org/jira/browse/OAK-6187
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: query
> Reporter: Thomas Mueller
> Priority: Minor
> Fix For: 1.10
>
>
> In order to reduce space usage, unused indexes should be removed or trimmed.
> Trimmed, because an index definition might contain "too much" (specially
> Lucene indexes, which index multiple properties and can be very large).
> One solution is to
> * log each query (avoiding duplicates),
> * include which indexes were used,
> * from that generate the minimum index definitions,
> * compared with existing indexes, get the list of unused indexes and index
> features since day X.
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