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https://issues.apache.org/jira/browse/OAK-1382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13890463#comment-13890463
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Marcel Reutegger commented on OAK-1382:
---------------------------------------
Hmm, there is actually code in place to deal with DocumentNodeStore instances
that are not disposed. The background thread only keeps a weak reference to the
DocumentNodeStore. After a closer look at the dump it turns out the majority of
memory is kept by DocumentMKConcurrentAddTest. The test creates a cluster with
16 DocumentMKs. Each instance has a default cache size of 256MB. The CacheLIRS
eagerly initializes the internal data structures to avoid growing the hash
tables later. This results in a quite high memory usage even if the caches are
not full.
I'll reduce the cache sizes for the test.
> oak-core tests may run out of memory
> ------------------------------------
>
> Key: OAK-1382
> URL: https://issues.apache.org/jira/browse/OAK-1382
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
>
> My oak-core build just ran out of memory. Quite a lot of memory is referenced
> from unused DocumentNodeStore instances, but are not garbage collected
> because the background thread associated with each store is still running. A
> test needs to dispose the store, which is missing in some of the tests.
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