[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-531) Use Lucene fieldcache

[Sanne Grinovero (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=37243#action_37243 ] 

Sanne Grinovero commented on HSEARCH-531:
-----------------------------------------

Also it's likely useful to turn it off for fast in memory Directories, as the Infinispan Lucene directory.

> Use Lucene fieldcache
> ---------------------
>
>                 Key: HSEARCH-531
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-531
>             Project: Hibernate Search
>          Issue Type: Improvement
>          Components: query
>            Reporter: Sanne Grinovero
>             Fix For: 3.4.0
>
>
> The Lucene per-segment FieldCache should be used for strings we fetch from the index (Stored), by default as we do with classname and PK.
> It might be useful for people to be able to add more fields to this cache in case of projections usage.
> (It's purpose is to speed up this reading of stored info - being per segment it's not invalidated per new IndexReader but per changed segments).
> Likely need a switch to turn it off, as it could consume much memory.

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