[infinispan-issues] [JBoss JIRA] (ISPN-1546) FineGrainedAtomicMap key and value iterators are not threadsafe

[Manik Surtani (Commented) (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-1546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649603#comment-12649603 ] 

Manik Surtani commented on ISPN-1546:
-------------------------------------

Hmm, this certainly sounds more interesting from a performance point of view.
                
> FineGrainedAtomicMap key and value iterators are not threadsafe
> ---------------------------------------------------------------
>
>                 Key: ISPN-1546
>                 URL: https://issues.jboss.org/browse/ISPN-1546
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Core API, Locking and Concurrency
>            Reporter: Sanne Grinovero
>            Assignee: Vladimir Blagojevic
>
> Invoking #keySet() or #values() might fail, even when using a transaction to isolate threads:
> {code}
> java.util.ConcurrentModificationException
> 	at org.infinispan.util.FastCopyHashMap$FasyCopyHashMapIterator.nextEntry(FastCopyHashMap.java:484)
> 	at org.infinispan.util.FastCopyHashMap$KeyIterator.next(FastCopyHashMap.java:560)
> 	at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
> 	at org.infinispan.atomic.FineGrainedAtomicHashMapProxy.keySet(FineGrainedAtomicHashMapProxy.java:104)
> 	at org.hibernate.ogm.dialect.infinispan.InfinispanAssociationSnapshot.getRowKeys(InfinispanAssociationSnapshot.java:59)
> 	at org.hibernate.ogm.datastore.spi.Association.getKeys(Association.java:132)
> 	at org.hibernate.ogm.loader.OgmLoader.getResultSet(OgmLoader.java:420)
> 	at org.hibernate.ogm.loader.OgmLoader.doQuery(OgmLoader.java:248)
> 	at org.hibernate.ogm.loader.OgmLoader.doQueryAndInitializeNonLazyCollections(OgmLoader.java:215)
> 	at org.hibernate.ogm.loader.OgmLoader.loadCollection(OgmLoader.java:185)
> 	at org.hibernate.ogm.loader.OgmBasicCollectionLoader.initialize(OgmBasicCollectionLoader.java:42)
> 	at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:622)
> 	at org.hibernate.event.internal.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:82)
> 	at org.hibernate.internal.SessionImpl.initializeCollection(SessionImpl.java:1607)
> 	at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:379)
> 	at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:112)
> 	at org.hibernate.collection.internal.PersistentSet.iterator(PersistentSet.java:180)
> {code}

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