Can't Enable or View Confluence Space Usage Statistic
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
Symptoms
Confluence Space Usage Statistic page is not shown.
The following appears in the atlassian-confluence.log:
1
2
2013-11-06 05:17:33,762 ERROR [main] [atlassian.plugin.manager.DefaultPluginManager] enableConfiguredPluginModule There was an error loading the descriptor 'Usage Index Manager' of plugin 'com.atlassian.confluence.ext.usage'. Disabling.
com.atlassian.bonnie.LuceneException: Failed to create searcher for directory: org.apache.lucene.store.SimpleFSDirectory@<confluence-home>/index/plugin/usage lockFactory=org.apache.lucene.store.SimpleFSLockFactory@4f882760
Diagnosis
Even though the user that run Confluence has enough read/write permission to <confluence-home>/index/plugin/usage directory, accessing Space Usage Statistic screen still throws the error trace above. However, migrating the instance to a new Home Directory solves the issue.
Cause
The index directory is corrupted during migration/upgrade or failure when restarting/shutting down Confluence instance.
Solution
Resolution
How to clear the apps (plugins) cache in Confluence Data Center
If it doesn't work, try to How to Rebuild the Content Indexes From Scratch on Unclustered Confluence
Otherwise, remove all the content of
<confluence-home>/index/plugin/usage/directory
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