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From Alexander Klimetschek <aklim...@adobe.com>
Subject Session concurrency warning
Date Wed, 09 Apr 2014 01:20:09 GMT
Hi,

if I get this warning below, does "another thread is concurrently writing" mean that the other
threads is using session WRITE methods?

Or could it happen just because a session was shared between two threads, one only READing
from the session, the other writing.

*WARN* org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate Attempt to perform Adding node
[....] while another thread is concurrently writing to session-3831. Blocking until the other
thread is finished using this session. Please review your code to avoid concurrent use of
a session.
java.lang.Exception: Stack trace of concurrent access to session-3831
	at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.perform(SessionDelegate.java:269)
	at org.apache.jackrabbit.oak.jcr.session.ItemImpl.perform(ItemImpl.java:113)
	at org.apache.jackrabbit.oak.jcr.session.NodeImpl.addNode(NodeImpl.java:253)


Cheers,
Alex
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