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From "Davide Giannella (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-7254) Indexes with excludedPaths, or includedPaths should not be picked for queries without path
Date Tue, 04 Jun 2019 15:38:13 GMT

     [ https://issues.apache.org/jira/browse/OAK-7254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Davide Giannella updated OAK-7254:
----------------------------------
    Fix Version/s:     (was: 1.14.0)

> Indexes with excludedPaths, or includedPaths should not be picked for queries without
path
> ------------------------------------------------------------------------------------------
>
>                 Key: OAK-7254
>                 URL: https://issues.apache.org/jira/browse/OAK-7254
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: lucene, query
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>            Priority: Critical
>             Fix For: 1.16.0
>
>
> Queries that don't have a clear path restriction should not use indexes that have excludedPaths
or includedPaths set, except in some exceptional cases (to be defined).
> For example, if a query doesn't have a path restriction, say:
> {noformat}
> /jcr:root//element(*, nt:base)[@status='RUNNING']
> {noformat}
> Then an index that has excludedPaths set (for example to /etc) shouldn't be used, at
least not if a different index is available. Currently it is used currently, actually in _favor_
of another index, if the property "status" is commonly used in /etc. Because of that, the
index that doesn't have excludedPath has a higher cost (as it indexes the property "status"
in /etc, and so has more entries for "status", than the index that doesn't index /etc).
> The same for includedPaths, in case queryPaths isn't set to the same value(s).



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