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From giacomo <giac...@apache.org>
Subject Re: [C2] sitemap_xmap.java bug?
Date Thu, 09 Aug 2001 19:48:21 GMT
On Mon, 30 Jul 2001, Stuart Roebuck wrote:

> Further on my quest to find why processing is taking longer than
> anticipated (but processing time is not being noticed by the Profiler), I
> notice the following lines appearing regularly in my compiled sitemap:
>
> >       if (true)
> >         return true;
> >
> >
> >       listOfMaps.remove (listOfMaps.size() - 1);
>
> Clearly the listOfMaps.remove line is never going to be called.  Is this
> intentional?

It came out of generation. If you find a solution you're very welcome to
patch it.

Giacomo

> This may or may not be related to my core problem which appears to amount
> to the fact that some page requests are causing 16 new JaxpParser
> components (TraxTransformers) to be generated in two lots of 8.  This is
> *not* under load - ie. one request at a time!
>
> It appears as though the TraxTransformers are not being reused.  However,
> this doesn't happen all the time, it only appears to happen when the trax
> transformation is part of a cocoon match which is being referenced within
> another match in the sitemap using "cocoon:/"
>
> Here's an example stack dump at the time:
>
> >   [1] org.apache.cocoon.components.parser.JaxpParser.newDocument
> > (JaxpParser.java:79)
> >   [2]
> > org.apache.cocoon.components.browser.BrowserImpl.createDocumentForBrowserInfo
> > (BrowserImpl.java:393)
> >   [3] org.apache.cocoon.components.browser.BrowserImpl.compose
> > (BrowserImpl.java:281)
> >   [4]
> > org.apache.avalon.excalibur.component.DefaultComponentFactory.newInstance
> > (DefaultComponentFactory.java:98)
> >   [5] org.apache.avalon.excalibur.component.DefaultComponentHandler.get
> > (DefaultComponentHandler.java:92)
> >   [6]
> > org.apache.avalon.excalibur.component.ExcaliburComponentManager.lookup
> > (ExcaliburComponentManager.java:266)
> >   [7]
> > org.apache.avalon.excalibur.component.ExcaliburComponentManager.lookup
> > (ExcaliburComponentManager.java:223)
> >   [8] org.apache.cocoon.transformation.TraxTransformer.compose
> > (TraxTransformer.java:334)
> >   [9]
> > org.apache.avalon.excalibur.component.DefaultComponentFactory.newInstance
> > (DefaultComponentFactory.java:98)
> >   [10] org.apache.avalon.excalibur.pool.AbstractPool.newPoolable
> > (AbstractPool.java:70)
> >   [11] org.apache.avalon.excalibur.pool.SoftResourceLimitingPool.grow
> > (SoftResourceLimitingPool.java:82)
> >   [12] org.apache.avalon.excalibur.pool.DefaultPool.get (DefaultPool.java:
> > 125)
> >   [13] org.apache.avalon.excalibur.component.PoolableComponentHandler.get
> > (PoolableComponentHandler.java:117)
> >   [14]
> > org.apache.avalon.excalibur.component.ExcaliburComponentSelector.select
> > (ExcaliburComponentSelector.java:246)
> >   [15] org.apache.cocoon.sitemap.SitemapComponentSelector.select
> > (SitemapComponentSelector.java:49)
> >   [16]
> > org.apache.cocoon.components.pipeline.AbstractEventPipeline.addTransformer
> > (AbstractEventPipeline.java:95)
> >   [17]
> > org.apache.cocoon.components.pipeline.CachingEventPipeline.addTransformer
> > (CachingEventPipeline.java:93)
> >   [18] org.apache.cocoon.www.file_.Users.stuart.Documents.Clients.Adolos.
> > Adolos_Website.Development.webapp.sitemap_xmap.wildcardMatchN334
> > (sitemap_xmap.java:3108)
> >   [19] org.apache.cocoon.www.file_.Users.stuart.Documents.Clients.Adolos.
> > Adolos_Website.Development.webapp.sitemap_xmap.process (sitemap_xmap.java:
> > 1467)
> >   [20] org.apache.cocoon.www.file_.Users.stuart.Documents.Clients.Adolos.
> > Adolos_Website.Development.webapp.sitemap_xmap.process (sitemap_xmap.java:
> > 1346)
> >   [21] org.apache.cocoon.components.source.SitemapSource.refresh
> > (SitemapSource.java:247)
> >   [22] org.apache.cocoon.components.source.SitemapSource.<init>
> > (SitemapSource.java:145)
> >   [23] org.apache.cocoon.components.source.CocoonSourceFactory.getSource
> > (CocoonSourceFactory.java:53)
> >   [24] org.apache.cocoon.components.source.SourceHandlerImpl.getSource
> > (SourceHandlerImpl.java:132)
> >   [25] org.apache.cocoon.environment.AbstractEnvironment.resolve
> > (AbstractEnvironment.java:229)
> >   [26] org.apache.cocoon.generation.ServerPagesGenerator.setup
> > (ServerPagesGenerator.java:140)
> >   [27]
> > org.apache.cocoon.components.pipeline.AbstractEventPipeline.setupPipeline
> > (AbstractEventPipeline.java:146)
> >   [28] org.apache.cocoon.components.pipeline.CachingEventPipeline.setup
> > (CachingEventPipeline.java:246)
> >   [29]
> > org.apache.cocoon.components.pipeline.CachingEventPipeline.generateKey
> > (CachingEventPipeline.java:108)
> >   [30]
> > org.apache.cocoon.components.pipeline.CachingStreamPipeline.process
> > (CachingStreamPipeline.java:279)
> >   [31] org.apache.cocoon.www.file_.Users.stuart.Documents.Clients.Adolos.
> > Adolos_Website.Development.webapp.sitemap_xmap.wildcardMatchN2EE
> > (sitemap_xmap.java:2854)
> >   [32] org.apache.cocoon.www.file_.Users.stuart.Documents.Clients.Adolos.
> > Adolos_Website.Development.webapp.sitemap_xmap.process (sitemap_xmap.java:
> > 1447)
> >   [33] org.apache.cocoon.www.file_.Users.stuart.Documents.Clients.Adolos.
> > Adolos_Website.Development.webapp.sitemap_xmap.process (sitemap_xmap.java:
> > 1330)
> >   [34] org.apache.cocoon.sitemap.Handler.process (Handler.java:160)
> >   [35] org.apache.cocoon.sitemap.Manager.invoke (Manager.java:103)
> >   [36] org.apache.cocoon.Cocoon.process (Cocoon.java:423)
> >   [37] org.apache.cocoon.servlet.CocoonServlet.service
> > (CocoonServlet.java:507)
> >   [38] javax.servlet.http.HttpServlet.service (HttpServlet.java:853)
> >   [39] org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
> > (ApplicationFilterChain.java:247)
> >   [40] org.apache.catalina.core.ApplicationFilterChain.doFilter
> > (ApplicationFilterChain.java:193)
> >   [41] org.apache.catalina.core.StandardWrapperValve.invoke
> > (StandardWrapperValve.java:243)
> >   [42] org.apache.catalina.core.StandardPipeline.invokeNext
> > (StandardPipeline.java:566)
> >   [43] org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.
> > java:472)
> >   [44] org.apache.catalina.core.ContainerBase.invoke (ContainerBase.java:
> > 943)
> >   [45] org.apache.catalina.core.StandardContextValve.invoke
> > (StandardContextValve.java:219)
> >   [46] org.apache.catalina.core.StandardPipeline.invokeNext
> > (StandardPipeline.java:566)
> >   [47] org.apache.catalina.valves.CertificatesValve.invoke
> > (CertificatesValve.java:246)
> >   [48] org.apache.catalina.core.StandardPipeline.invokeNext
> > (StandardPipeline.java:564)
> >   [49] org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.
> > java:472)
> >   [50] org.apache.catalina.core.ContainerBase.invoke (ContainerBase.java:
> > 943)
> >   [51] org.apache.catalina.core.StandardContext.invoke
> > (StandardContext.java:2251)
> >   [52] org.apache.catalina.core.StandardHostValve.invoke
> > (StandardHostValve.java:164)
> >   [53] org.apache.catalina.core.StandardPipeline.invokeNext
> > (StandardPipeline.java:566)
> >   [54] org.apache.catalina.valves.AccessLogValve.invoke
> > (AccessLogValve.java:446)
> >   [55] org.apache.catalina.core.StandardPipeline.invokeNext
> > (StandardPipeline.java:564)
> >   [56] org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.
> > java:472)
> >   [57] org.apache.catalina.core.ContainerBase.invoke (ContainerBase.java:
> > 943)
> >   [58] org.apache.catalina.core.StandardEngineValve.invoke
> > (StandardEngineValve.java:163)
> >   [59] org.apache.catalina.core.StandardPipeline.invokeNext
> > (StandardPipeline.java:566)
> >   [60] org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.
> > java:472)
> >   [61] org.apache.catalina.core.ContainerBase.invoke (ContainerBase.java:
> > 943)
> >   [62] org.apache.catalina.connector.http.HttpProcessor.process
> > (HttpProcessor.java:984)
> >   [63] org.apache.catalina.connector.http.HttpProcessor.run
> > (HttpProcessor.java:1074)
> >   [64] java.lang.Thread.run (Thread.java:496)
>
> Responses from folk who know this thing much better than I would be much
> appreciated, I've been at this one for three days now and my previous
> posts don't seem to have generated much interest!  :-(
>
> Stuart.
>
> -------------------------------------------------------------------------
> Stuart Roebuck                                  stuart.roebuck@adolos.com
> Lead Developer                               Java, XML, MacOS X, XP, etc.
> ADOLOS                                           <http://www.adolos.com/>
>
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>
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