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https://issues.apache.org/jira/browse/ISIS-1852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16364003#comment-16364003
 ] 

ASF subversion and git services commented on ISIS-1852:
-------------------------------------------------------

Commit 3706fa92cf0d3668a0a18be21b759f585c187692 in isis's branch 
refs/heads/ISIS-1852_parallel_stream_patch from [~hobrom]
[ https://gitbox.apache.org/repos/asf?p=isis.git;h=3706fa9 ]

ISIS-1852 testcase backported to JDK 7

> Iterating over query result list with parallelStream produces next exception
> ----------------------------------------------------------------------------
>
>                 Key: ISIS-1852
>                 URL: https://issues.apache.org/jira/browse/ISIS-1852
>             Project: Isis
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.15.1
>            Reporter: Vladimir Nisevic
>            Assignee: Andi Huber
>            Priority: Major
>             Fix For: 1.16.1, 2.0.0-M1
>
>
> Given the the result from database, e.g.
> {code:java}
> final List<MobileDevice> devices = 
> repositoryService.allInstances(MobileDevice.class);{code}
> When I iterate over list with parallelStream
> {code:java}
> filteredDevices.parallelStream().forEach(mobileDevice -> {
> // my stuff here
> });{code}
> Then I get this exception
> {code:java}
> ... 134 more
> Caused by: java.lang.IllegalStateException: No service of type class 
> org.apache.isis.core.runtime.services.metrics.MetricsServiceDefault is 
> available on this 
> at 
> org.apache.isis.core.runtime.services.ServiceInstantiator$2.invoke(ServiceInstantiator.java:217)
> at 
> org.apache.isis.core.runtime.services.metrics.MetricsServiceDefault_$$_jvstad5_7.postLoad(MetricsServiceDefault_$$_jvstad5_7.java)
> at 
> org.datanucleus.api.jdo.JDOCallbackHandler.postLoad(JDOCallbackHandler.java:305)
> at org.datanucleus.state.StateManagerImpl.postLoad(StateManagerImpl.java:4443)
> at 
> org.datanucleus.state.StateManagerImpl.initialiseForCachedPC(StateManagerImpl.java:645)
> at 
> org.apache.isis.objectstore.jdo.datanucleus.JDOStateManagerForIsis.initialiseForCachedPC(JDOStateManagerForIsis.java:112)
> at 
> org.datanucleus.state.ObjectProviderFactoryImpl.newForCachedPC(ObjectProviderFactoryImpl.java:280)
> at 
> org.datanucleus.ExecutionContextImpl.getObjectFromLevel2Cache(ExecutionContextImpl.java:5210)
> at 
> org.datanucleus.ExecutionContextImpl.getObjectFromCache(ExecutionContextImpl.java:5101)
> at 
> org.datanucleus.ExecutionContextImpl.findObject(ExecutionContextImpl.java:3048)
> at 
> org.datanucleus.store.rdbms.query.PersistentClassROF.getObjectForDatastoreId(PersistentClassROF.java:460)
> at 
> org.datanucleus.store.rdbms.query.PersistentClassROF.getObject(PersistentClassROF.java:385)
> at 
> org.datanucleus.store.rdbms.scostore.CollectionStoreIterator.<init>(CollectionStoreIterator.java:100)
> at 
> org.datanucleus.store.rdbms.scostore.FKSetStore.iterator(FKSetStore.java:1080)
> at 
> org.datanucleus.store.types.wrappers.backed.Collection.loadFromStore(Collection.java:374)
> at 
> org.datanucleus.store.types.java8.wrappers.backed.Collection.stream(Collection.java:70)
> at 
> a1.guidedselling.offer.hardware.MobileDevice.referenceNextDevicePriceForTarifWithoutService(MobileDevice.java:195)
> at 
> a1.guidedselling.templates.OfferTemplatesRepository.lambda$offerTemplatesFor$1(OfferTemplatesRepository.java:102)
> at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
> at 
> java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
> at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
> at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
> at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
> at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
> at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
> at 
> java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157){code}



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