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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 40170] New: - ArrayIndexOutOfBoundsException in ResourceCache
Date Wed, 02 Aug 2006 18:00:29 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=40170

           Summary: ArrayIndexOutOfBoundsException in ResourceCache
           Product: Tomcat 5
           Version: 5.0.28
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Connector:Coyote
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: jamey@jamescourtney.net


I'm pretty regularly seeing the following error in my embedded Tomcat
(5.0.28) connector.  It appears to occur as a result of one thread entering 
the ResourceCache.lookup(String name) method and getting the index of an 
element in the cache using the find method.  Before this thread can access the 
element at that index the cache array is modified by a second thread and the 
index is now outside the bounds of the array.
A basic race condition.

2005-11-28 15:09:01: ERROR An exception or error occurred in the container 
during the request processing
java.lang.ArrayIndexOutOfBoundsException: 4868
        at
org.apache.naming.resources.ResourceCache.lookup(ResourceCache.java:288)
        at
org.apache.naming.resources.ProxyDirContext.cacheLookup(ProxyDirContext.
java:1393)
        at
org.apache.naming.resources.ProxyDirContext.lookup(ProxyDirContext.java:
279)
        at
org.apache.tomcat.util.http.mapper.Mapper.internalMapWrapper(Mapper.java
:775)
        at
org.apache.tomcat.util.http.mapper.Mapper.internalMap(Mapper.java:621)
        at
org.apache.tomcat.util.http.mapper.Mapper.map(Mapper.java:511)
        at
org.apache.coyote.tomcat5.CoyoteAdapter.postParseRequest(CoyoteAdapter.j
ava:279)
        at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:158)
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:79
9)
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processC
onnection(Http11Protocol.java:705)
        at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:57
7)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:683)
        at java.lang.Thread.run(Thread.java:534)

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