Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

WFLY-16350 Conscious Language in ha-singleton-deployment quickstart #569

Merged
merged 1 commit into from
May 9, 2022
Merged

WFLY-16350 Conscious Language in ha-singleton-deployment quickstart #569

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
13 changes: 3 additions & 10 deletions ha-singleton-deployment/README.adoc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -114,26 +114,19 @@ While the instance not running, the timer will display the following as the last
INFO [org.jboss.as.server] (management-handler-thread - 2) WFLYSRV0010: Deployed "ha-singleton-deployment.jar" (runtime-name : "ha-singleton-deployment.jar")
----

. Verify failover of the singleton deployment. Shutdown the server operating as the singleton master, for instance by using the `Ctrl` + `C` key combination in the terminal. Observe the following messages on the node being shutdown:
. Verify failover of the singleton deployment. Shutdown the server operating as the primary provider of the singleton, for instance by using the `Ctrl` + `C` key combination in the terminal. Observe the following messages on the node being shutdown:
+
[source,options="nowrap"]
----
INFO [class org.jboss.as.quickstarts.ha.singleton.SingletonTimer] (EJB default - 3) SingletonTimer: Hello World!
INFO [class org.jboss.as.quickstarts.ha.singleton.SingletonTimer] (EJB default - 4) SingletonTimer: Hello World!
INFO [org.jboss.as.server] (Thread-2) WFLYSRV0220: Server shutdown has been requested via an OS signal
WARNING [class org.jboss.as.quickstarts.ha.singleton.SingletonTimer] (ServerService Thread Pool -- 31) SingletonTimer is stopping: the server is either being shutdown or another node has become elected to be the singleton master.
WARNING [class org.jboss.as.quickstarts.ha.singleton.SingletonTimer] (ServerService Thread Pool -- 31) SingletonTimer is stopping: the server is either being shutdown or another node has become elected to be the primary provider of the singleton.
...
INFO [org.jboss.as] (MSC service thread 1-6) WFLYSRV0050: WildFly Core 3.0.0.Final stopped in 88ms
----
+
You might also see the following error in the singleton master log. This is due to the shutdown not finishing cleanly and is documented in https://issues.jboss.org/browse/JBEAP-9408[JBEAP-9408]. You can ignore this error.
+
[source,options="nowrap"]
----
ERROR [org.jboss.as.clustering.jgroups.protocol.NAKACK2] (thread-20) JGRP000039: node1: failed to deliver OOB message [dst: <null>, src: node2 (3 headers), size=73 bytes, flags=OOB|DONT_BUNDLE]: java.lang.IllegalStateException: channel is not connected
----
+
Now observe the log messages on the second server. The node will now be elected as the singleton master, deployment will complete, and the timer will start operating:
Now observe the log messages on the second server. The node will now be elected as the primary provider of the singleton, deployment will complete, and the timer will start operating:
+
[source,options="nowrap"]
----
Expand Down
2 changes: 1 addition & 1 deletion ...gleton-deployment/src/main/java/org/jboss/as/quickstarts/ha/singleton/SingletonTimer.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,7 @@ public void scheduler(Timer timer) {
@PreDestroy
public void stop() {
LOGGER.warning("SingletonTimer is stopping: the server is either being shutdown or another node has " +
"become elected to be the singleton master.");
"become elected to be the primary provider of the singleton.");
}

}