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Posted to dev@directory.apache.org by "Kiran Ayyagari (JIRA)" <ji...@apache.org> on 2010/02/26 12:27:28 UTC
[jira] Assigned: (DIRSERVER-1459) Adding members to a groupOfNames
results in polynomial increase in JDBM partition size
[ https://issues.apache.org/jira/browse/DIRSERVER-1459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kiran Ayyagari reassigned DIRSERVER-1459:
-----------------------------------------
Assignee: Kiran Ayyagari (was: Alex Karasulu)
> Adding members to a groupOfNames results in polynomial increase in JDBM partition size
> --------------------------------------------------------------------------------------
>
> Key: DIRSERVER-1459
> URL: https://issues.apache.org/jira/browse/DIRSERVER-1459
> Project: Directory ApacheDS
> Issue Type: Bug
> Affects Versions: 1.5.5
> Environment: Any (tested on Linux and Mac OS X)
> Reporter: Ben Hoyt
> Assignee: Kiran Ayyagari
> Priority: Blocker
> Fix For: 1.5.6
>
> Attachments: DIRSERVER-1459.tar.gz, screenshot-1.jpg
>
>
> I noticed a polynomial increase JDBM partition size and therefore disk usage when adding users to groups in my ApacheDS instance. The vast majority of the usage (95+% once you hit a couple thousand users) is in workingDirectory/partitionId/master.db
> Further testing showed that simply adding a user is linear, as one would expect, and as 'apacheds-tools capacity' confirms. It is only when a user is made a member of a group that the JDBM partition size shoots up.
> Example statistics:
> Add 16,000 users - JDBM partition size = ~70 megabytes
> Now add those same 16,000 users to a single group (all in the same group) - JDBM partition size = ~19 GIGABYTES
> I'll work to attach a test case and some more numbers from my tests
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