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https://issues.apache.org/jira/browse/OAK-2263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15173780#comment-15173780
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Chetan Mehrotra commented on OAK-2263:
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With OAK-2679 this aspect is very much addressed. Repeated read for property
definition node is avoided
> Avoid unnecessary reads on index lookup
> ---------------------------------------
>
> Key: OAK-2263
> URL: https://issues.apache.org/jira/browse/OAK-2263
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
> Priority: Minor
>
> The PropertyIndex looks up the matching index definitions multiple times.
> This means each time all definitions are read to find out which one matches
> the given property restriction. AFAICS this happens at least six times. The
> first two times when the cost is calculated: 1) check if the property is
> indexed and 2) calculate the cost. The next four times when the query is
> executed: 3) check if the property is indexed, 4) calculate the cost, 5)
> check if the property is indexed, 6) lookup index to create cursor for query.
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