NullPointerException when iterating over properties
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Key: JCR-1271
URL: https://issues.apache.org/jira/browse/JCR-1271
Project: Jackrabbit
Issue Type: Bug
Components: jackrabbit-core
Reporter: Marcel Reutegger
Priority: Minor
Running ConcurrentReadWriteTest (NUM_NODES=5, NUM_THREADS=3,
RUN_NUM_SECONDS=120) resulted in a NullPointerException:
Exception in thread "Thread-11" java.lang.NullPointerException
at
org.apache.commons.collections.map.AbstractReferenceMap$ReferenceEntry.getValue(AbstractReferenceMap.java:596)
at
org.apache.commons.collections.map.AbstractReferenceMap.containsKey(AbstractReferenceMap.java:204)
at
org.apache.jackrabbit.core.state.ItemStateMap.contains(ItemStateMap.java:66)
at
org.apache.jackrabbit.core.state.ItemStateReferenceCache.isCached(ItemStateReferenceCache.java:91)
at
org.apache.jackrabbit.core.state.LocalItemStateManager.hasItemState(LocalItemStateManager.java:173)
at
org.apache.jackrabbit.core.state.XAItemStateManager.hasItemState(XAItemStateManager.java:252)
at
org.apache.jackrabbit.core.state.SessionItemStateManager.getItemState(SessionItemStateManager.java:174)
at
org.apache.jackrabbit.core.ItemManager.createItemInstance(ItemManager.java:495)
at org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:326)
at
org.apache.jackrabbit.core.LazyItemIterator.prefetchNext(LazyItemIterator.java:90)
at
org.apache.jackrabbit.core.LazyItemIterator.next(LazyItemIterator.java:203)
at
org.apache.jackrabbit.core.LazyItemIterator.nextProperty(LazyItemIterator.java:118)
at
org.apache.jackrabbit.core.ConcurrentReadWriteTest$1$1.execute(ConcurrentReadWriteTest.java:64)
at
org.apache.jackrabbit.core.AbstractConcurrencyTest$Executor.run(AbstractConcurrencyTest.java:110)
at java.lang.Thread.run(Thread.java:619)
The cache is not synchronized and is accessed at the same time by the current
thread and another thread that notified ItemStates about changes.
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