Apache Modcluster failed to drain active sessions - jboss

Question

I'm am using JBoss EAP 6.2 as Webapplication server and Apace Modcluster for load balancing.
Whenever I try to undeploy my webapplication, I get the following warning
14:22:16,318 WARN [org.jboss.modcluster] (ServerService Thread Pool -- 136) MODCLUSTER000025: Failed to drain 2 remaining active sessions from default-host:/starrassist within 10.000000.1 seconds
14:22:16,319 INFO [org.jboss.modcluster] (ServerService Thread Pool -- 136) MODCLUSTER000021: All pending requests drained from default-host:/starrassist in 10.002000.1 seconds
and it takes forever to undeploy and the EAP server-group and node in which the application is deployed becomes unresponsive.
The only workaround is to restart the entire EAP server. My Question is, Is there an attribute that I can set in EAP or ModCluster so that the active sessions beyond a maxTimeOut would expire itself?

Answer 1

To control the timeout to stop a context you can use the following configuration value:
Stop Context Timeout
The amount of time, measure in units specified by
stopContextTimeoutUnit, for which to wait for clean shutdown of a
context (completion of pending requests for a distributable context;
or destruction/expiration of active sessions for a non-distributable
context).
CLI Command:
/profile=full-ha/subsystem=modcluster/mod-cluster-config=configuration/:write-attribute(name=stop-context-timeout,value=10)
Ref: Configure the mod_cluster Subsystem
Likewise if you are using JDK 8 take a look at this issue: Draining pending requests fails with Oracle JDK8