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Posted to dev@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2012/12/05 10:22:59 UTC
[jira] [Comment Edited] (JCR-3477) Lazy query result sets
[ https://issues.apache.org/jira/browse/JCR-3477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13510373#comment-13510373 ]
Michael Dürig edited comment on JCR-3477 at 12/5/12 9:21 AM:
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I have so far seen it for queries of type
/jcr:root/root//element(*)
when the tree rooted at "root" is large (no flat hierarchies involved). I.e. ~110k nodes bumps memory usage up to 400MB on Query.execute().
was (Author: mduerig):
I have so far seen it for queries of type
/jcr:root/root//element(*)
when the tree rooted at "root" is large. I.e. ~110k nodes bumps memory usage up to 400MB on Query.execute().
> Lazy query result sets
> -----------------------
>
> Key: JCR-3477
> URL: https://issues.apache.org/jira/browse/JCR-3477
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: jackrabbit-core
> Reporter: Alex Parvulescu
> Priority: Minor
>
> Following JCR-3472, I'd like to open a discussion on what can be reasonably expected from a query that does/can do lazy fetching of results.
> Creating ~110k nodes and fetching them all looks like it goes in the vicinity of 400mb of memory, so the default 256mb setup for tests is not sufficient to run such a test, as we've already seen on JCR-3472.
> What are the expectations around lazy loading and queries that can potentially hit a high number of nodes.
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