Jerry Cwiklik created UIMA-2414:
-----------------------------------
Summary: Fix ConcurrentModificationException in uima-as client
Key: UIMA-2414
URL: https://issues.apache.org/jira/browse/UIMA-2414
Project: UIMA
Issue Type: Bug
Components: Async Scaleout
Affects Versions: 2.3.1AS
Reporter: Jerry Cwiklik
Fix For: 2.4.0AS
The uima-as client throws
org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineCommon_impl WARN
2012-05-25 01:08:41,391 [BaseUIMAAsynchronousEngineCommon_impl$2.2] -
java.util.ConcurrentModificationException at
java.util.AbstractList$SimpleListIterator.next(AbstractList.java:64) at
org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineCommon_impl.handleServiceInfo(BaseUIMAAsynchronousEngineCommon_impl.java:1121)
while handling ServiceInfo message from a remote service. The service sends
this message right after it picks up a request msg from a queue and before
calling AE's process method. The msg includes service host ip, process PID, and
a service temp queue for receiving FreeCas requests (if the service is a CM).
This temp queue is also used by the client to send a a Stop request to the CM
to abort generation of child CASes. The above exception happens while iterating
over a list of outstanding CASes. The code is trying to locate a matching CAS
(by id) and to associate with it received temp reply queue in case application
wants to abort the CAS. Access to the list is not synchronized in this case and
causes the exception. Refactor client code to prevent concurrent access to the
list.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
