[WICKET-3736] npe in StoredResponsesMap

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5-RC4
• Fix Version/s: 1.5-RC5
• Component/s: wicket
• Environment: linux 2.6.32 ; tomcat 7.12; jdk 1.6.0.22
• Assignee: Martin Tzvetanov Grigorov
• Reporter: Francois
• Created: 23/May/11 10:21
• Updated: 23/May/11 10:57
• Resolved: 23/May/11 10:57

Description

While doing some load testing with with a small prog using Apache httpclient (45 threads, only the get requests were done)

I got this error

17:59:22.086 ERROR ["http-bio-8080"-exec-1] DefaultExceptionMapper - 108 - Unexpected error occurred
java.lang.NullPointerException: null
at org.apache.wicket.protocol.http.StoredResponsesMap$Value.access$000(StoredResponsesMap.java:37) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.protocol.http.StoredResponsesMap.removeEldestEntry(StoredResponsesMap.java:73) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at java.util.LinkedHashMap.addEntry(LinkedHashMap.java:410) ~[na:1.6.0_22]
at java.util.HashMap.put(HashMap.java:385) ~[na:1.6.0_22]
at org.apache.wicket.protocol.http.StoredResponsesMap.put(StoredResponsesMap.java:95) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.protocol.http.WebApplication.storeBufferedResponse(WebApplication.java:723) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.handler.render.WebPageRenderer.storeBufferedResponse(WebPageRenderer.java:73) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:258) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:139) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:718) ~[wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63) ~[wicket-request-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:96) ~[wicket-request-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212) [wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:253) [wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:138) [wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:194) [wicket-core-1.5-RC4.2.jar:1.5-RC4.2]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) [catalina.jar:7.0.12]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.12]

via jmx I could see that only 45 sessions were there
and that the PeakNumberOfActiveRequests was also 45.