[jboss-jira] [JBoss JIRA] Created: (JGRP-962) NAKACK / UNICAST: verify that concurrent access to NakReceiverWindows / AckReceiverWindows is handled correctly

NAKACK / UNICAST: verify that concurrent access to NakReceiverWindows / AckReceiverWindows is handled correctly --------------------------------------------------------------------------------------------------------------- Key: JGRP-962 URL: https://jira.jboss.org/jira/browse/JGRP-962 Project: JGroups Issue Type: Task Reporter: Bela Ban Assignee: Bela Ban Fix For: 2.8 In both UNICAST and NAKACK, when we merge, we update the local digests and potentially reset / remove / re-create NakReceiverWindows or Ack{Sender,Receiver}Windows. This is currently not synchronized enough, we need to synchronize correctly. For example, prevent the following (in NAKACK): - A message M is received and the ref to win (NRW) is retrieved from xmit_table - The NRW is reset() and removed from xmit_table - However, M is inserted into the NRW because we still had a ref to it ! - GC probably collects the NRW instance, but we should prevent this anyway... -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira