[jira] [Closed] (JENA-613) Exception "ManagementFactory is a restricted class" for Jena 2.11.0 inside Google App Engine

["Andy Seaborne (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne closed JENA-613.
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> 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: Question
>          Components: ARQ
>    Affects Versions: Jena 2.11.0
>         Environment: Google App Engine
>            Reporter: TipTop Labs
>            Assignee: Andy Seaborne
>            Priority: Minor
>
> 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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