[jboss-dev] JGroups 2.5.2 released

[Richard Achmatowicz]

Hi everyone,

On behalf of the JGroups team, i'm pleased to announce that JGroups 
2.5.2 has been released!

The binary and source distribution can be downloaded from 
http://sourceforge.net/project/showfiles.php?group_id=6081. The release 
notes and change log are below.

Enjoy !

Richard Achmatowicz


Release Notes JGroups 2.5.2
===========================
JGroups 2.5.2 is a patch release for 2.5 GA. It contains no new 
functionality, but some
limited feature requests and primarily bug fixes.

IMPORTANT NOTE:
JGroups 2.5.2 is also an EOL (End of Line) release for JGroups 2.5 - 
meaning that it
represents the last release of JGroups 2.5.x. The reason is that 2.4.x 
is used in
JBoss EAP 4, 2.6.2 will be used in EAP 5, and 2.5.x is somewhat orphaned 
in between.
Any bugs found in 2.5 will only get fixed in 2.6. It is a simple matter 
to switch
from 2.5 to 2.6.

Manual
------
The manual is online at 
http://www.jgroups.org/javagroupsnew/docs/manual/html/index.html

Bug fixes
---------
GMS: A concurrency-related exception which was preventing successful 
group merges and necessitated
shutdown of the enire group.
[JGRP-611] - MergeTask GMS ConcurrentModificationException

SEQUENCER: SEQUENCER provides total ordering of messages. This issue 
caused total ordering to be
violated in circumstances involving concurrent sends.
[JGRP-607] - SEQUENCER: incorrect ordering on concurrent sends

RPC DISPATCHER: The callRemoteMethods() method would hang on some 
processes within a group during
periods where group membership was changing significantly.
[JGRP-620] - RpcDispatcher.callRemoteMethods() hangs

Feature Requests
----------------
REINCARNATION: reincarnation occurs when a group member crashes and upon 
restart assumes the
identity of a member known previously to the group, which leads to 
anomalous behaviour.
[JGRP-130] - Problems with reincarnation

Tasks
-----
CHANNEL OPTIONS: Shunned channels will now automatically attempt to 
rejoin the group, and fetch
the state from the coordinator by default.
[JGRP-651] - JChannel: set auto_reconnect and auto_getstate to true by 
default

The complete list of features and bug fixes can be found at 
http://jira.jboss.com/jira/browse/JGRP.

Bela Ban, Kreuzlingen, Switzerland, January 2008

Change Log
=========
Release Notes - JGroups - Version 2.5.2

** Bug
    * [JGRP-607] - SEQUENCER: incorrect ordering on concurrent sends
    * [JGRP-610] - Problems with large return value and FC
    * [JGRP-611] - MergeTask GMS ConcurrentModificationException
    * [JGRP-617] - ConcurrentModificationException sending notifications 
in ReplicatedHashMap.
    * [JGRP-620] - RpcDispatcher.callRemoteMethods() hangs
    * [JGRP-649] - FC: NPE if sender of credits is null

** Feature Request
    * [JGRP-130] - Problems with reincarnation
    * [JGRP-535] - NAKACK: release lock when message is delivered

** Task
    * [JGRP-609] - Javadoc JChannelFactory
    * [JGRP-615] - UDP: JGroups always allocates the same ports
    * [JGRP-651] - JChannel: set auto_reconnect and auto_getstate to 
true by default