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https://issues.apache.org/jira/browse/CAY-2876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikita Timofeev closed CAY-2876.
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Resolution: Fixed
*5.0*:
https://github.com/apache/cayenne/commit/7fe25cd54e90f54c4514dbb52e9bac3a4f6235b0
*4.2*: https://github.com/apache/cayenne/pull/628
> Memory leak in the ObjectStore
> ------------------------------
>
> Key: CAY-2876
> URL: https://issues.apache.org/jira/browse/CAY-2876
> Project: Cayenne
> Issue Type: Bug
> Components: Core Library
> Affects Versions: 4.1, 4.1.1, 4.2, 4.2.1, 5.0-M1
> Reporter: Nikita Timofeev
> Assignee: Nikita Timofeev
> Priority: Major
> Fix For: 4.2.2, 5.0-M2
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Under some use cases default {{ObjectStore}} implementation could lead to a
> considerable memory leak.
> Conditions are following:
> # Cayenne objects use flattened attributes
> # Application uses a shared readonly context that is never cleaned or removed
> If those conditions are met {{ObjectStore.trackedFlattenedPaths}} just slowly
> grows (speed depends on how many different objects with flattened paths are
> loaded) and never freed.
> NOTE: {{ObjectStore.objectMap}} grows too in this case, but it's a weak-ref
> based map by default, so it's memory is actually reclaimed by the JVM, while
> {{ObjectStore.trackedFlattenedPaths}} is just a regular {{ConcurrentHashMap}}.
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