TipTop Labs created JENA-613:
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Summary: Exception "ManagementFactory is a restricted class" for
Jena 2.11.0 inside Google App Engine
Key: JENA-613
URL: https://issues.apache.org/jira/browse/JENA-613
Project: Apache Jena
Issue Type: Bug
Components: ARQ
Affects Versions: Jena 2.11.0
Environment: Google App Engine
Reporter: TipTop Labs
I run into this exception when employing Jena 2.11.0 as part of a Google App
Engine application.
{noformat}
1:10:41,371 WARN [com.hp.hpl.jena.sparql.mgt.ARQMgt] - Failed to initialize JMX
java.lang.NoClassDefFoundError: java.lang.management.ManagementFactory is a
restricted class. Please see the Google App Engine developer's guide for more
details.
at
com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
at com.hp.hpl.jena.sparql.mgt.ARQMgt.init(ARQMgt.java:56)
{noformat}
Is it safe to assume that this will only disable ARQ’s JMX agent and not
otherwise impact Jena and the application? And is it possibly to disable JMX
more gracefully e.g. by a Jena/ARQ property setting?
I noticed in
[ARQ|http://grepcode.com/file/repo1.maven.org/maven2/org.apache.jena/jena-arq/2.9.1/com/hp/hpl/jena/sparql/mgt/ARQMgt.java]
is (perhaps) already meant to handle environments where JMX does not exist,
but apparently this does not cover Google App Engine (where
{{ManagementFactory}} is not available by
[design|https://developers.google.com/appengine/docs/java/jrewhitelist]) well.
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