Aled Sage created BROOKLYN-528:
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Summary: Memory leak: proxy class (and java.lang.reflect.*
instances) per entity
Key: BROOKLYN-528
URL: https://issues.apache.org/jira/browse/BROOKLYN-528
Project: Brooklyn
Issue Type: Bug
Affects Versions: 0.11.0
Reporter: Aled Sage
There is a memory leak when creating and deleting entities.
After creating and then deleting a really simple app many times ({{services:
[{type: org.apache.brooklyn.entity.stock.BasicApplication}]}}), there are a lot
of classes with names like {{class com.sun.proxy.$Proxy10033}} (probably one
per entity we created!). This also leads to a huge number of instances of
things like {{java.lang.reflect.Method}}.
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Looking at the code in
{{org.apache.brooklyn.core.objs.proxy.InternalEntityFactory.createEntityProxy()}},
when it calls {{java.lang.reflect.Proxy.newProxyInstance}} it first creates a
new {{AggregateClassLoader}} instance and passes that in. This causes
{{newProxyInstance}} to create a new class every time.
The fix should be simple: to reuse {{AggregateClassLoader}} instances, rather
than creating new ones.
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