https://issues.apache.org/bugzilla/show_bug.cgi?id=50107
Summary: StandardPipeline is destroyed two times.
Product: Tomcat 7
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: minor
Priority: P2
Component: Catalina
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=26181)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=26181)
patch for MBeanFactory.java
When I call MBeanFactory#removeHost operation via JMX(jconsle), I get the
following message.
INFO: The destroy() method was called on component
[Pipeline[StandardHost[localhost]]] after destroy() had already been called.
The second call will be ignored.
StandardPipeline is destroyed two times.
At first, pipeline is destroyed at ContainerBase.java L.1096:
<<ContainerBase.java destroyInternal() L.1094-1097>>
1094 // Stop the Valves in our pipeline (including the basic), if
any
1095 if (pipeline instanceof Lifecycle) {
1096 ((Lifecycle) pipeline).destroy();
1097 }
<<ContainerBase.java destroyInternal() L.1104-1107>>
1104 // Required if the child is destroyed directly.
1105 if (parent != null) {
1106 parent.removeChild(this);
1107 }
When above-mentioned "parent" is StandardEngine, the parent.removeChild() calls
the LifecycleBase#child.destroy(), and child.destroy() calls
ContainerBase#destroyInternal().
At this time ContainerBase is StandardHost.
<<ContainerBase.java removeChild() L.960-964>>
960 // Set child's parent to null to prevent a loop
961 child.setParent(null);
962 try {
963 child.destroy();
964 } catch (LifecycleException e) {
As a result, pipeline is destroyed again(, and get the above-mentioned info
message).
In Tomcat 6.0, child.destroy() is not called from ContainerBase#removeChild().
But, as seen above, the removeChild() that is contained in Tomcat7.0 calls the
child.destroy().
IMHO, it might not be better to call the child.destroy() from removeHost().
I made the patch that removed host.destroy() from removeHost().
Best regards.
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