The clustering documentation says that the useDirtyFlag can be used to
configure the number of session replications. If I remember correctly,
this is only true for the SimpleTcpReplicationManager. I did a quick
search through the DeltaManager code and verified that the useDirtyFlag
is indeed not being used (5.5.15)
My question then:
Is the useDirtyFlag obsolete with DeltaManager?
e.g. Is this session replicated with DeltaManager?
Hashtable map = (Hashtable)session.getAttribute ( "map" );
map.put ( "something", "val" );
Last time I visited this issue (5.5.9 or so), The DeltaManager did not
work in the above case and I had to switch to
SimpleTcpReplicationManager and set useDirtyFlag to false. If that is
still the case, it seems strange that the sample server.xml with the
download still has this...
==SNIP==
<Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
managerClassName="org.apache.catalina.cluster.session.DeltaManager"
expireSessionsOnShutdown="false"
useDirtyFlag="true"
notifyListenersOnReplication="true">
==SNIP==
Thoughts?
-Dennis
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