PM12076; 7.0: the eXtreme Scale http session code getting into a bad state

Download Description

PM12076 resolves the following problem:

ERROR DESCRIPTION:
When an application has certain kinds of problems (for example, compiled with the wrong JDK version), and the server hosting the application is not restarted, the eXtreme Scale http session code can get into a bad state. The application on subsequent requests could see IllegalStateExceptions, LockTimeoutExceptions, and NullPointerExeptions.

LOCAL FIX:
None

PROBLEM SUMMARY

USERS AFFECTED:
All users of WebSphere eXtreme Scale Version 7.0 who are using the HTTP session replication support.


PROBLEM DESCRIPTION:
When restarting a Web application, an IllegalStateException or LockTimeoutException exceptions result.

RECOMMENDATION:
None

The WebSphere eXtreme Scale session filter code was not handling application exceptions properly. Any unexpected exceptions that resulted from application code caused the session filter to be in an unrecoverable state. In this scenario, the following exceptions or errors could be logged: IllegalStateException, LockTimeoutException, or an error that says that the ObjectGrid was previously destroyed.

PROBLEM CONCLUSION:
An interim fix will be made available for this APAR. A future cumulative fix will correct the problem for WebSphere eXtreme Scale Version 6.1.0.5