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Posted to oak-issues@jackrabbit.apache.org by "Tomek Rękawek (JIRA)" <ji...@apache.org> on 2017/08/18 08:35:00 UTC
[jira] [Updated] (OAK-6560) Sidegrade uses too much memory
[ https://issues.apache.org/jira/browse/OAK-6560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tomek Rękawek updated OAK-6560:
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Summary: Sidegrade uses too much memory (was: Sidegrade takes too much memory)
> 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
> Fix For: 1.8, 1.7.6
>
>
> 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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