https://issues.apache.org/bugzilla/show_bug.cgi?id=46384
Mark Thomas <ma...@apache.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #23501|0 |1 is obsolete| | --- Comment #5 from Mark Thomas <ma...@apache.org> 2009-09-13 19:14:42 BST --- Created an attachment (id=24253) --> (https://issues.apache.org/bugzilla/attachment.cgi?id=24253) Updated patch for this issue I found the time to take another look at this. Whilst Filip's comment about threads locking up is correct - and Tomcat 6 does have a fix for that - threads locking up is not at the root of this issue. At the root of this issue is there there are two lists of cluster members. One in McastServiceImpl.membership and one in ReplicationTransmitter.map Whilst checkExpire() does update both lists with the sync on expiredMutex, the receiver thread updates the McastServiceImpl.membership outside of this mutex. That leads to the problem that the OP is describing here. Whilst Tomcat 6 does contain a fix for this, the code bases have diverged sufficiently that the fix would be invasive. Therefore I am proposing a patch for Tomcat that is similar to my earlier patch but has a slightly wider sync block based on my better understanding of this issue. I have tested the patch and whilst I can force this issue using a debugger without the patch, I can not force it with the patch in place. -- Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org