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http://jira.nuxeo.org/browse/NXP-3968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=58099#action_58099
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Radu Darlea commented on NXP-3968:
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The iterated query doesn't work (see NXP-3814). Collecting all the documents in
a list leads to exhaustive memory consumption and in some case session time
out. The mechanism of providing documents is based on session.getChildren() and
retrieving the list of the versions for current document.
A new list containing usual documents goes through the documents base following
the tree. A list is used instead of an iterator to be able to collect the
documents on different levels of the tree. A recursive mechanism can't be used
because of the pipe mechanism. The list contains at one moment in time: first
the versions of the last usual document exported, then the children of last
usual document exported, then the previous accumulated documents. Every
exported document is removed from the list but still the list can grow quite
large when the document have lot of versions and the branch holding the
exported document has lots of children on many levels.
> Reduce the memory load when exporting documents
> -----------------------------------------------
>
> Key: NXP-3968
> URL: http://jira.nuxeo.org/browse/NXP-3968
> Project: Nuxeo Enterprise Platform
> Issue Type: Bug
> Components: Installers / Admin tools
> Affects Versions: 5.2 GA
> Reporter: Radu Darlea
> Assignee: Radu Darlea
> Fix For: 5.2.1
>
>
> When large repository are exported through replication tool, the memory grows
> extensively and for slow repositories the session expires. Avoid collecting
> all the documents in a list.
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