[infinispan-issues] [JBoss JIRA] (ISPN-1546) FineGrainedAtomicMap key and value iterators are not threadsafe
[
https://issues.jboss.org/browse/ISPN-1546?page=com.atlassian.jira.plugin....
]
Vladimir Blagojevic commented on ISPN-1546:
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First of all FastCopyHashMap is throwing exception ConcurrentModificationException because
we do not lock entire AtomicHashMap in FineGrainedAtomicMap for the duration of keySet
operation as we do with plain-vanilla AtomicMap. AtomicHashMap is not thread safe to begin
with and it relies on LockingInterceptor to overlay thread safety. Therefore, we have to
have either a super lock and lock it for the duration of certain operations or we have to
lock all keys in FineGrainedAtomicMap. Manik?
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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