Add note about message processing order.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@966177 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/webapps/docs/config/cluster-manager.xml b/webapps/docs/config/cluster-manager.xml
index 2f19f06..6813829 100644 (file)
--- a/webapps/docs/config/cluster-manager.xml
+++ b/webapps/docs/config/cluster-manager.xml
@@ -110,8 +110,12 @@
   <subsection name="org.apache.catalina.ha.session.BackupManager Attributes">
     <attributes>
      <attribute name="mapSendOptions" required="false">
-       The backup manager uses a replicated map, this map is sending and receiving messages.
-       You can setup the flag for how this map is sending messages, the default value is <code>6</code>(asynchronous).
+       The backup manager uses a replicated map, this map is sending and
+       receiving messages. You can setup the flag for how this map is sending
+       messages, the default value is <code>6</code>(asynchronous).<br/>
+       Note that if you use asynchronous messaging it is possible for update
+       messages for a session to be processed by the receiving node in a
+       different order to the order in which they were sent.
      </attribute>
     </attributes>
   </subsection>

diff --git a/webapps/docs/config/cluster.xml b/webapps/docs/config/cluster.xml
index 2626bff..a88ea93 100644 (file)
--- a/webapps/docs/config/cluster.xml
+++ b/webapps/docs/config/cluster.xml
@@ -125,6 +125,9 @@
       <code>Channel.SEND_OPTIONS_ASYNCHRONOUS = 0x0008</code><br/>
       <code>Channel.SEND_OPTIONS_USE_ACK = 0x0002</code><br/>
       So to use ACK and ASYNC messaging, the flag would be <code>10 (8+2) or 0x000B</code><br/>
+      Note that if you use ASYNC messaging it is possible for update messages
+      for a session to be processed by the receiving nodes in a different order
+      to the order in which they were sent.
       </p>
     </attribute>
     <attribute name="channelStartOptions" required="false">