https://issues.apache.org/bugzilla/show_bug.cgi?id=47342
Summary: ReplicatedContext#start throws NullPointerException.
Product: Tomcat 6
Version: 6.0.20
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Cluster
AssignedTo: [email protected]
ReportedBy: [email protected]
ReplicatedContext#start throws NullPointerException.
context.xml is as follows.
<Context className="org.apache.catalina.ha.context.ReplicatedContext" />
When Tomcat is started, the following logs are output.
Jun 10, 2009 6:40:57 PM org.apache.catalina.ha.context.ReplicatedContext start
SEVERE: Unable to start ReplicatedContext
java.lang.NullPointerException
at java.io.File.<init>(Unknown Source)
at
org.apache.catalina.core.StandardContext.getBasePath(StandardContext.java:4840)
at
org.apache.catalina.ha.context.ReplicatedContext.start(ReplicatedContext.java:63)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
at
org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:630)
at
org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:556)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:491)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:583)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
This causes because docBase has not been initialized.
I think that this solution for the problem is an addition of initialization to
ReplicatedContext#start.
I made a patch.
Index: java/org/apache/catalina/ha/context/ReplicatedContext.java
===================================================================
--- java/org/apache/catalina/ha/context/ReplicatedContext.java (revision
763870 ( https://svn.apache.org/viewcvs.cgi?view=rev&rev=763870 ))
+++ java/org/apache/catalina/ha/context/ReplicatedContext.java (working
copy)
@@ -51,6 +51,13 @@
@Override
public synchronized void start() throws LifecycleException {
if ( this.started ) return;
+ if( !initialized ) {
+ try {
+ init();
+ } catch( Exception ex ) {
+ throw new LifecycleException("Error initializaing ", ex);
+ }
+ }
super.addLifecycleListener(this);
try {
CatalinaCluster catclust = (CatalinaCluster)this.getCluster();
Regards.
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