DSpaceObjectManager unnecessarily keeps references to DSpace objects
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Key: DS-1070
URL: https://jira.duraspace.org/browse/DS-1070
Project: DSpace
Issue Type: Bug
Components: XMLUI
Affects Versions: 1.8.0, 1.7.2, 1.7.1, 1.7.0, 1.6.2, 1.6.1, 1.6.0, 1.5.2,
1.5.1, 1.5.0, post-1.8.0
Reporter: Andrea Schweer
Assignee: Andrea Schweer
Priority: Major
Attachments: objectmanager.patch
DSpaceObjectManager keeps an ArrayList with a reference to every DSpaceObject
instance it encounters. The DSpaceObject instances aren't used for anything but
take up heap memory. The effect is particularly noticeable with Discovery
enabled because several Discovery components each have their own copy of
DSpaceObjectManager.
The attached patch removes the ArrayList (and tidies up the code slightly). On
a test instance, applying this patch brought down heap usage from 600 MB down
to 70 MB (heap size measured a few minutes after starting up DSpace, with
comparable activity).
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