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https://issues.apache.org/jira/browse/OAK-6560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tomek Rękawek updated OAK-6560:
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Fix Version/s: 1.4.19
1.0.40
1.2.28
> Sidegrade uses too much memory
> ------------------------------
>
> Key: OAK-6560
> URL: https://issues.apache.org/jira/browse/OAK-6560
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: upgrade
> Reporter: Tomek Rękawek
> Assignee: Tomek Rękawek
> Fix For: 1.8, 1.7.7, 1.2.28, 1.0.40, 1.4.19, 1.6.7
>
> Attachments: OAK-6560.patch, OAK-6560.patch
>
>
> Repo migration from old segment to oak segment tar requires heap memory
> proportional to the repository size, which does not scale well for
> large-scale repositories. Also, some structures (e.g. lots of direct
> children) have a big impact on the memory footprint.
> For some repositories, the sidegrade requires as much as 40GB heap to perform
> the migration, which might not be an option for most of the customers.
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