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Posted to oak-issues@jackrabbit.apache.org by "Thomas Mueller (JIRA)" <ji...@apache.org> on 2013/01/10 10:20:14 UTC

[jira] [Resolved] (OAK-537) The Property2Index eagerly and unnecessarily fetches all data

     [ https://issues.apache.org/jira/browse/OAK-537?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Mueller resolved OAK-537.
--------------------------------

    Resolution: Fixed

Revision 1431216
                
> The Property2Index eagerly and unnecessarily fetches all data
> -------------------------------------------------------------
>
>                 Key: OAK-537
>                 URL: https://issues.apache.org/jira/browse/OAK-537
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>            Priority: Minor
>
> Currently, the Property2Index (as well as the PropertyIndex and the NodeTypeIndex) loads all paths into a hash set. This is even the case for the getCost operation, which should be fast and therefore not load too much data.
> This strategy can cause ouf-of-memory if the result is too big. Also, loading all data is not necessary unless the user reads all rows.
> Instead, the index should only load data on demand. Also, the getCost operation should only estimate the number of read nodes, and not actually read the data.

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