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Date: Tue, 26 Jan 2010 01:56:28 -0500
Message-ID: <5eb405c71001252256m3bac9c11k5e901ac01e75effe@mail.gmail.com>
Subject: Re: NPE on Jetty
From: Jarek Gawor <jgawor@gmail.com>
To: dev <dev@geronimo.apache.org>
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Seems like the problem might be caused by URLResource.exists() calls
as the change in revision 903093 makes these NPEs disappear.

Jarek

On Tue, Jan 26, 2010 at 12:35 AM, Jarek Gawor <jgawor@gmail.com> wrote:
> Hi,
>
> While testing some web applications on Jetty very quickly I ran into
> the following NPE (while accessing some jsps):
>
> java.lang.NullPointerException
> =A0 =A0 =A0 =A0at java.util.zip.Inflater.ensureOpen(Inflater.java:336)
> =A0 =A0 =A0 =A0at java.util.zip.Inflater.getBytesWritten(Inflater.java:29=
6)
> =A0 =A0 =A0 =A0at java.util.zip.ZipFile$1.available(ZipFile.java:243)
> =A0 =A0 =A0 =A0at org.apache.felix.framework.URLHandlersBundleURLConnecti=
on.connect(URLHandlersBundleURLConnection.java:125)
> =A0 =A0 =A0 =A0at org.apache.felix.framework.URLHandlersBundleURLConnecti=
on.getInputStream(URLHandlersBundleURLConnection.java:134)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.util.resource.URLResource.exists(URLR=
esource.java:102)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.server.handler.ContextHandler$Context=
.getResource(ContextHandler.java:1623)
> =A0 =A0 =A0 =A0at org.apache.jasper.servlet.JspServlet.serviceJspFile(Jsp=
Servlet.java:306)
> =A0 =A0 =A0 =A0at org.apache.jasper.servlet.JspServlet.service(JspServlet=
.java:265)
> =A0 =A0 =A0 =A0at javax.servlet.http.HttpServlet.service(HttpServlet.java=
:668)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.servlet.ServletHolder.handle(ServletH=
older.java:532)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.servlet.ServletHandler.doHandle(Servl=
etHandler.java:454)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.server.handler.ScopedHandler.handle(S=
copedHandler.java:119)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.server.session.SessionHandler.handle(=
SessionHandler.java:186)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.server.handler.ContextHandler.doHandl=
e(ContextHandler.java:942)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.servlet.ServletHandler.doScope(Servle=
tHandler.java:389)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.server.handler.ContextHandler.doScope=
(ContextHandler.java:876)
> =A0 =A0 =A0 =A0at org.apache.geronimo.jetty8.handler.GeronimoWebAppContex=
t.doScope(GeronimoWebAppContext.java:115)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.server.handler.ScopedHandler.handle(S=
copedHandler.java:117)
> =A0 =A0 =A0 =A0at org.eclipse.jetty.server.Dispatcher.include(Dispatcher.=
java:172)
>
> After googling a bit I found the following bug reports:
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=3D193269 and
> https://issues.apache.org/jira/browse/FELIX-1032. Looks like a JRE bug
> but maybe we can prevent this problem by patching Jetty (by closing
> the inputstreams) ?
>
> Jarek
>