[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-310) Out of Memory on ScrollableResults

[Sanne Grinovero (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32151#action_32151 ] 

Sanne Grinovero commented on HSEARCH-310:
-----------------------------------------

I was trying the new solution, I got blocked again at the point I need to check the object(s) I'm returning from the cache are still managed.
What we cache is actually a Object[] and it is possible for it to contain projected Strings, which are going to return false to the is-attached-to-session test, having me reload the data in all cases; so cache is useless when there are projected fields.
Going to think about it... ignore the case? open another issue about returning unattached objects? We probably need to change DocumentExtractor so that I can ask for which positions in the array are expected to be managed.

> Out of Memory on ScrollableResults
> ----------------------------------
>
>                 Key: HSEARCH-310
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-310
>             Project: Hibernate Search
>          Issue Type: Bug
>          Components: query
>    Affects Versions: 3.0.1.GA
>         Environment: Java SE, 3.0.1.GA
>            Reporter: Sanne Grinovero
>            Assignee: Sanne Grinovero
>             Fix For: 3.1.1
>
>
> http://forum.hibernate.org/viewtopic.php?p=2400452
> I think this is more appropriate for 3.1.1
> Emmanuel said:
> "The implementation suffers several flows:
>  - we do create an EntityInfo[] as big as the number of hits
>  - we lazily load this array but we never release "old content"
>  - we lazily load the content (ie objects) by window but we never release it
> Some Soft reference based cache can help."

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