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From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-7947) Lazy loading of Lucene index files startup
Date Thu, 03 Jan 2019 11:39:00 GMT

    [ https://issues.apache.org/jira/browse/OAK-7947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732950#comment-16732950
] 

Thomas Mueller commented on OAK-7947:
-------------------------------------

[~catholicon] could you review OAK-7947_v4.patch please? I added a feature flag to disable
lazy loading. If you don't have time to review right now, not a problem (I think it's fine
to commit it before the review).


> Lazy loading of Lucene index files startup
> ------------------------------------------
>
>                 Key: OAK-7947
>                 URL: https://issues.apache.org/jira/browse/OAK-7947
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: lucene, query
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>            Priority: Major
>         Attachments: OAK-7947.patch, OAK-7947_v2.patch, OAK-7947_v3.patch, OAK-7947_v4.patch,
lucene-index-open-access.zip
>
>
> Right now, all Lucene index binaries are loaded on startup (I think when the first query
is run, to do cost calculation). This is a performance problem if the index files are large,
and need to be downloaded from the data store.



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