https://issues.apache.org/bugzilla/show_bug.cgi?id=49343
Summary: AbstractReplicatedMap is not removed from channel.
Product: Tomcat 7
Version: trunk
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Cluster
AssignedTo: dev@tomcat.apache.org
ReportedBy: kfuj...@apache.org
AbstractReplicatedMap#init() is as follows.
=====
protected void init(....) {
...skip...
this.rpcChannel = new RpcChannel(this.mapContextName, channel, this);
//add this map as a message listener
this.channel.addChannelListener(this);
//listen for membership notifications
this.channel.addMembershipListener(this);
try {
//broadcast our map, this just notifies other members of our existence
broadcast(MapMessage.MSG_INIT, true);
//transfer state from another map
transferState();
//state is transferred, we are ready for messaging
broadcast(MapMessage.MSG_START, true);
} catch (ChannelException x) {
log.warn("Unable to send map start message.");
throw new RuntimeException("Unable to start replicated map.",x);
}
}
=====
When ChannelException is thrown after this(AbstractReplicatedMap) is added to
channel,
RuntimeException is thrown.
And AbstractReplicatedMap#init() is called from the constructor of
AbstractReplicatedMap(LazyReplicatedMap or ReplicatedMap).
In a word, no one can remove this(AbstractReplicatedMap) added to channel.
As a result, trivial memory leak and IllegalArgumentException("Listener already
exists:...) are caused.
Best regards.
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