[Building Sakai] Tomcat 7.0.29+ adds a few minutes to startup

[Matthew Jones]

FYI:

Adding this option to the property saves a minute in startup costs, *but*
seems to break most (all?) tools that use JSTL, JSF or Spring MVC that
don't have the taglibs available in the META-INF (seemingly most every tool
in Sakai)

This includes Chat, Forums, Gradebook, Podcasts, Postem, BasicLTI, Roster,
etc

caused by: javax.servlet.ServletException: Servlet.init() for servlet
Faces Servlet threw exception
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1147)
caused by: java.lang.IllegalStateException: No Factories configured
for this Application. This happens if the faces-initialization does
not work at all - make sure that you properly include all
configuration settings necessary for a basic faces application and
that all the necessary libs are included. Also check the logging
output of your web application and your container for any exceptions

. . .

So seriously for development only. It would be a *nice* to fix this issue
though. :)


On Thu, Nov 1, 2012 at 11:31 AM, Matthew Jones <matthew at longsight.com>wrote:

> It seems like the alternative is to add *every* Sakai jar to this list
> individually (probably a huge list) as it was suggested here [1].
> "INFO: At least one JAR was scanned for TLDs yet contained no TLDs.
> Enable debug logging for this logger for a complete list of JARs that
> were scanned but no TLDs were found in them. Skipping unneeded JARs
> during scanning can improve startup time and JSP compilation time."
>
> It was suggested changing the log level to debug would list every
> individual jar. A comment on this post said that adding all of the
> used taglibs to META-INF could also resolve this scanning problem, but
> that looks like it could be a lot of work as well. Possibly something
> to consider.
>
> This seems like a great option for development (1 minute restart of
> all tools is really nice) and also lowers the memory requirements
> needed for startup (as a lot of memory is needed for this tag
> scanning).
>
> [1]
> http://thinkinginsoftware.blogspot.com/2011/10/tomcat-7-scans-all-jars-for-tlds.html
>
> On Thu, Nov 1, 2012 at 11:10 AM, Earle Nietzel <earle.nietzel at gmail.com>
> wrote:
> > In recent testing with the current tomcat version 7.0.32 I experienced 2
> or
> > 3 times longer startups of Sakai.
> >
> > Looking at the Tomcat change logs,
> > http://tomcat.apache.org/tomcat-7.0-doc/changelog.html
> > noticed in 7.0.29 they enabled scanning for servlet 3 features.
> >
> > This scan will scan all jars for servlet 3 annotations.
> >
> > They added an option to skip this scanning called: jarsToSkip
> >
> > Since Sakai at this point doesn't use Servlet 3 spec, that I can recall,
> you
> > can configure it to skip all jars with adding *.jar to all of the
> > *.jarsToSkip properties in conf/catalina.properties.
> >
> > My startup is now back to approx 65 seconds!
> >
> > Enjoy,
> > Earle
> >
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