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https://issues.apache.org/jira/browse/OAK-6381?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davide Giannella closed OAK-6381.
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Bulk close 1.7.12
> Improved index analysis tools
> -----------------------------
>
> Key: OAK-6381
> URL: https://issues.apache.org/jira/browse/OAK-6381
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Fix For: 1.7.12, 1.8
>
>
> It would be good to have more tools to analyze indexes:
> * For Lucene indexes, get a histogram of samples (terms). We have
> "getFieldInfo", which shows which fields are how common, but we don't have
> terms. For example the /oak:index/lucene index contains 1 million fulltext
> fields and node names for 1 million nodes, but I wonder why, and what typical
> nodes names are, and maybe fulltext for most nodes is actually empty. Maybe a
> new method "getTermHistogram(int sampleCount)" or similar
> * For property indexes, number of updated nodes per second or so. Right now
> we can just analyze the counts per key, but some indexes / keys are very
> volatile (see many short lived entries)
> * For Lucene indexes, writes per second or so (in MB).
> * How indexes are used (approximate read nodes / MB per hours)
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