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https://issues.apache.org/jira/browse/ISIS-2156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16899485#comment-16899485
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ASF subversion and git services commented on ISIS-2156:
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Commit a9aa06cc35bbdb7d94afceae04fed1bed828a7e9 in isis's branch refs/heads/v2
from Andi Huber
[ https://gitbox.apache.org/repos/asf?p=isis.git;h=a9aa06c ]
ISIS-2156 hotfix: disable HttpSessions creation when basic-auth strategy
- several principal and related objects have been improved to procude
less stress on the heap
- smoketests added that also test for the absence of a HttpSession when
using basic-auth strategy against a rest endpoint
- also moves the new restclient introduced with v2 from applib to a new
extension module 'restclient'
- improvements to the restclient to also handle scalar value types
> Security Manager Extension: Memory Leak w/ PrincipalForApplicationUser
> ----------------------------------------------------------------------
>
> Key: ISIS-2156
> URL: https://issues.apache.org/jira/browse/ISIS-2156
> Project: Isis
> Issue Type: Improvement
> Components: Extensions
> Reporter: Andi Huber
> Assignee: Andi Huber
> Priority: Major
> Fix For: 2.0.0
>
>
> Hi,
> We ran into the issue that our application keeps building up memory but never
> releases it. We could track it down to the class PrincipalForApplicationUser.
> Every time a user is authenticated, a new PrincipalForApplicationUser object
> is created and it is then never released. We experience this memory issue
> after a change of increasing the number of permissions from 20 to about 200.
> When comparing the behaviour of the application before and after the change
> we see that the retained size of the PrincipalForApplicationUser class has
> increased from about 15KB per instance to about 210KB per instance. For our
> investigation we created a test environment based on the simpleapp
> application to be able to isolate the issue and reproduce the issue in a
> minimalistic environment. So the simpleapp application was extended with 200
> fields on which permissions are set. In our test we set the maximum memory
> size of the VM to 200MB. The test application uses about 40MB initially. We
> then start firing requests to the application (using jmeter), to:
> /restful/services/simple.SimpleObjectMenu What we observe then is that memory
> usage grows rather quickly and eventually it is exhausted. Can you help with
> a solution for this issue? The simpleapp test application we used is
> available on github:
> [https://github.com/pocos-nl/isis-simpleapp-memoryissues]
> It also includes the jmeter test script:
> memoryLeak-bareApp-SecurityPerformanceTestObject.jmx Thanks, Leandro
> D'Agostino
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