Manak,
On 12/12/23 10:05, Manak Bisht wrote:
To use *DeltaManager* with unicast (static membership), the Tomcat 8.5
documentation (https://tomcat.apache.org/tomcat-8.5-doc/config/cluster.html)
states that the channelStartOptions should be equal to *3*.
However, the value should be left as the default when using the
*StaticMembershipService* according to the Tomcat 9.0 documentation (
https://tomcat.apache.org/tomcat-9.0-doc/config/cluster.html).
Why does this distinction exist?
Historical happenstance?
The default is SND_RX_SEQ (1) | SEND_TX_SEQ (2) | MBR_RX_SEQ (4) |
MBR_TX_SEQ (8) = 15.
It occurs to be that with static membership, the values of MBR_* don't
matter since there is no in-cluster chatter about membership: it's
static(!).
So using the default 15 instead of 3 for a static cluster shouldn't make
any difference. So perhaps the documentation for charnnelStartOptions
should say:
"
To start a channel without multicasting, you would want to ensure your
channelStartOptions include Channel.SND_RX_SEQ | Channel.SND_TX_SEQ
(i.e. 3).
"
* Full disclosure, I've never set up a Tomcat cluster and might have no
idea what I'm talking about.
-chris
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