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From Weijian Fang ...@ecs.soton.ac.uk>
Subject Re: Lost versions and "Tag failed" error
Date Tue, 21 Apr 2009 19:33:17 GMT
I don't think it is a client-side caching issue, because my user saw
his edits went live.

Cheers,

Weijian



2009/4/20 Janne Jalkanen <janne.jalkanen@iki.fi>:
> Writes are not cached, so they go directly to the persistence store.
>
> Does it help if your users shift-refreshes once he's saved things?
> Does the content end up in the repository, ie. is the page history
> still correct? This could be a browser caching issue as well, if
> they've got very aggressive caching set up.
>
> /Janne
>
> On Mon, Apr 20, 2009 at 04:22:36PM +0100, Weijian Fang wrote:
>> I see JSPWiki uses some caching mechanism. How is the consistency
>> between the in-memory cache and the persisted wiki page versions? If
>> just after the save button in a wiki page edit tab is successfully
>> returned, tomcat/jspwiki is restarted, will the new edits be safely
>> recorded in the file system? I am using jspwiki 2.6.2 with
>> VersioningFileProvider.
>>
>> Cheers,
>>
>> Weijian
>>
>>
>>
>> 2009/4/20 Weijian Fang <wf@ecs.soton.ac.uk>:
>> > Hi,
>> >
>> > One of my JSPWiki users reported that one of his saved wiki pages (it
>> > means he did see the "save" button returns successfully) has reverted
>> > to its previous version. Because he complained this for quite a few
>> > times (for different pages), and this time he even got a witness, so I
>> > really believe him. Has anyone experienced this kind of lost versions
>> > as well?
>> >
>> > Quite a lot "Tag failed" errors have been recorded by my log4j.
>> > Usually they burst out in a very short period. Please see the log4j
>> > record below. Will it have anything to do with the lost version
>> > problem? Many thanks in advance!
>> >
>> > <log4j:event logger="com.ecyrd.jspwiki.tags.WikiTagBase"
>> > timestamp="1239931142106" level="ERROR" thread="TP-Processor14">
>> > <log4j:message><![CDATA[Tag failed]]></log4j:message>
>> > <log4j:NDC><![CDATA[OMII-UK:/wiki/PrivateWIKIADMINSystemInfo
>> > OMII-UK:http://www.omii.ac.uk/wiki/PrivateWIKIADMINSystemInfo]]></log4j:NDC>
>> > <log4j:throwable><![CDATA[javax.servlet.jsp.JspException: WikiContext
>> > may not be NULL - serious internal problem!
>> >        at com.ecyrd.jspwiki.tags.WikiTagBase.doStartTag(WikiTagBase.java:86)
>> >        at org.apache.jsp.Error_jsp._jspx_meth_wiki_005fMessages_005f0(Error_jsp.java:178)
>> >        at org.apache.jsp.Error_jsp._jspService(Error_jsp.java:125)
>> >        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
>> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>> >        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
>> >        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
>> >        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
>> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>> >        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
>> >        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>> >        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
>> >        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
>> >        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
>> >        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
>> >        at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:686)
>> >        at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:656)
>> >        at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:801)
>> >        at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)
>> >        at org.apache.jsp.Wiki_jsp._jspService(Wiki_jsp.java:135)
>> >        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
>> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>> >        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
>> >        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
>> >        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
>> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>> >        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
>> >        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>> >        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
>> >        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
>> >        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
>> >        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
>> >        at com.ecyrd.jspwiki.WikiServlet.doGet(WikiServlet.java:100)
>> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
>> >        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>> >        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
>> >        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>> >        at com.ecyrd.jspwiki.ui.WikiServletFilter.doFilter(WikiServletFilter.java:99)
>> >        at com.ecyrd.jspwiki.ui.WikiJSPFilter.doFilter(WikiJSPFilter.java:91)
>> >        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
>> >        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>> >        at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
>> >        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
>> >        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>> >        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
>> >        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
>> >        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>> >        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
>> >        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:548)
>> >        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
>> >        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
>> >        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
>> >        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
>> >        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773)
>> >        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703)
>> >        at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895)
>> >        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
>> >        at java.lang.Thread.run(Thread.java:595)
>> > ]]></log4j:throwable>
>> > </log4j:event>
>> >
>> > Cheers,
>> >
>> > Weijian
>> >
>

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