We have the following setup:
- Common NFS mounted disk drive shared by two Unix machines
- Jboss is installed on this mound drive.
- Instance of Jboss server is configured under /servers/myserver
- I start Jboss from MachineA run.sh -c myserver... Server starts up.
- Then I start Jboss from MachineB run.sh -c myserver.. Server
startupEverything seems OK.
Remember both machines have common mounted drive where the Jboss resides and
strted from.
Now the problem. This might be little confusing but bear with me.
As I mentioned above I started Jboss on Machine A first. Then I started Jboss
on MachineB.
Now when I run my application on MachineB and everything is fine but when I run
it on MachineA I get an exception. Now listen to this. If I were to start
MachineB first then MachineA then my application on MachineA will run but B
will fail.
These two servers are sharing everthing since they were both started from the
same phsical server location.
It seems like later staerted server always works fine. This kind of gives me a
hint that it some how holds some resources (such as JAR files). I thinnk when
the second server starts it gets controll of some of the jar files therefore
first started server can'y access these jars.
Some of you might say why not run two servers from two different server
locations. Well we are trying to avoid to deploy our applications and
configurations to two places. That being said here is the exception:
14:56:54,910 WARN [WebappClassLoader] Failed to open JAR
java.util.zip.ZipException: No such file or directory
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.(ZipFile.java:204)
at java.util.jar.JarFile.(JarFile.java:132)
at java.util.jar.JarFile.(JarFile.java:97)
at
org.apache.catalina.loader.WebappClassLoader.openJARs(WebappClassLoader.java:1544)
at
org.apache.catalina.loader.WebappClassLoader.findResourceInternal(WebappClassLoader.java:1763)
at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1570)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:850)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1299)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1181)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:303)
at
org.springframework.web.servlet.FrameworkServlet.serviceWrapper(FrameworkServlet.java:414)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:346)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153)
at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
14:56:54,918 ERROR [[viewserver]] Servlet.service() for servlet viewserver
threw exception
java.lang.NullPointerException
at
org.apache.catalina.loader.WebappClassLoader.findResourceInternal(WebappClassLoader.java:1766)
at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1570)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:850)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1299)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1181)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:303)
at
org.springframework.web.servlet.FrameworkServlet.serviceWrapper(FrameworkServlet.java:414)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:346)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153)
at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
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