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Posted to oak-issues@jackrabbit.apache.org by "Chetan Mehrotra (JIRA)" <ji...@apache.org> on 2017/03/27 05:28:42 UTC
[jira] [Updated] (OAK-2777) Minimize the cost calculation for
queries using reference restrictions.
[ https://issues.apache.org/jira/browse/OAK-2777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chetan Mehrotra updated OAK-2777:
---------------------------------
Fix Version/s: 1.8
> Minimize the cost calculation for queries using reference restrictions.
> -----------------------------------------------------------------------
>
> Key: OAK-2777
> URL: https://issues.apache.org/jira/browse/OAK-2777
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, query
> Affects Versions: 1.1.2, 1.2
> Reporter: Przemo Pakulski
> Labels: performance
> Fix For: 1.8
>
> Attachments: oak-2777.patch
>
>
> According to the javadocs (QueryIndex) minimum cost for index is 1. Currently ReferenceIndex returns this minimum value, when it can be used for the query.
> But even then cost for remaining indexes is still calculated. We could skip cost calculation of remaining indexes if we achieved the minimum cost already.
> It will speed up all queries which can leverage the reference Index.
> Example query:
> SELECT * FROM [nt:base] WHERE PROPERTY([rep:members], 'WeakReference') = '345bef9b-ffa1-3e09-85df-1e03cfa0fb37'
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