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https://issues.apache.org/jira/browse/OAK-6110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davide Giannella closed OAK-6110.
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Bulk close for 1.7.0
> Offline compaction uses too much memory
> ----------------------------------------
>
> Key: OAK-6110
> URL: https://issues.apache.org/jira/browse/OAK-6110
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: segment-tar
> Reporter: Michael Dürig
> Assignee: Michael Dürig
> Labels: memory, performance
> Fix For: 1.7.0, 1.8
>
>
> Using offline compaction on a repository with nodes having many direct child
> node I observed a steady increase of heap usage. This is cause by using a
> {{MemoryNodeBuilder}} in {{CompactDiff.childNodeAdded()}}, which causes all
> those child nodes to be cached in memory.
> Changing the line
> {code}
> child = EMPTY_NODE.builder();
> {code}
> to
> {code}
> child = writer.writeNode(EMPTY_NODE).builder();
> {code}
> fixes the problem as the latter returns a {{SegmentNodeBuilder}} where the
> former returns a {{MemoryNodeBuilder}}.
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