When adding nodes inside a given node on different sessions distributed on
different threads is throws InvalidItemStateException
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Key: JCR-2428
URL: https://issues.apache.org/jira/browse/JCR-2428
Project: Jackrabbit Content Repository
Issue Type: Bug
Components: jackrabbit-core
Affects Versions: 1.6.0
Environment: Mac OS X 10.6 with JDK 1.5 (yes, I downgraded this)
Reporter: Luiz Fernando Teston
I just found an strange behavior while using multiple sessions on multi thread
environment. I'd like to know if I did something wrong.
My application code do this:
1 - before start to work, it creates a root node inside a new session. It saves
and close this session.
2 - create a bunch of workers. Each worker has its own session.
3 - each worker adds nodes inside the root node retrieved by its session. It
saves and do a logout properly.
4 - fill this workers on a list of Callables to be passed to an java 5
ThreadPoolExecutor.
5 - it executes all workers on the ThreadPool.
6 - it do some asserts to verify if it gots some errors or not.
During phase 5 it gots an exception telling this:
javax.jcr.InvalidItemStateException: Item cannot be saved because it has been
modified externally: node /
at
org.apache.jackrabbit.core.ItemImpl.getTransientStates(ItemImpl.java:245)
at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:939)
at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:915)
I just wrote a test to simulate this behavior. Sometimes it got this error
sometimes not. Also to be easy to simulate this error, just change the
THREAD_SIZE and NODE_SIZE variables.
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