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From Tomislav Petrović <t.petro...@inet.hr>
Subject Re: Webapp reloading issue and intermittent 404 errors
Date Wed, 30 Jun 2010 11:45:44 GMT
Pid said on 30.6.2010 13:12:
> On 30/06/2010 12:04, Tomislav Petrović wrote:
>> Tomislav Petrović said on 30.6.2010 12:59:
>>> Pid said on 29.6.2010 23:20:
>>>> On 29/06/2010 19:29, Konstantin Kolinko wrote:
>>>>> 2010/6/29 Caldarale, Charles R<Chuck.Caldarale@unisys.com>:
>>>>>>> From: Tomislav Petrović [mailto:t.petrovic@inet.hr]
>>>>>>> Subject: Re: Webapp reloading issue and intermittent 404 errors
>>>>>>>
>>>>>>> org.apache.catalina.util.RequestUtil.normalize(RequestUtil.java:131)
>>>>>>
>>>>>> IIRC, you are not the first person to report an exception at this
>>>>>> spot in the code.  (Unfortunately, I can't locate the other thread
>>>>>> at the moment, but it was fairly recent.)
>>>>>
>>>>> That was
>>>>> https://issues.apache.org/bugzilla/show_bug.cgi?id=49488
>>>>>
>>>>>>     The code in question has been run through many test cases,
>>>>>> inside and outside of Tomcat, and does not appear to contain any
>>>>>> errors (although it could be slightly more efficient).
>>>>
>>>> Weird.  I couldn't find that in bugzilla.  Anyhow, it's Windows this
>>>> time too.
>>>>
>>>>
>>>> Tomislav: where is the Tomcat installation on the filing system, and
>>>> where are the webapps being deployed from, if not tomcat/webapps?
>>>>
>>>> What type of filing system is it?
>>>>
>>>>
>>>> Also, did you manage to get hold of the config files yet?
>>>
>>> Good news is when I put reloadable=false on context problem (both of
>>> them, intermittent 404 too) went away, so I have workaround. Bad news
>>> is server is going into production so no messing with it no more.
>>>
>>> Yes, this is same bug as one in bugzilla, don't know if what triggered
>>> is same.
>>>
>>> Here is detailed info (my first suspect is<Resource>s in server.xml
>>> but this is only my guess.
>>>
>>> Tomcat is Apache Tomcat/6.0.24, running without tcnative-1.dll
>>>
>>> Java version is: 1.6 update 18
>>>
>>> Windows version: 2003 SP2 (32 bit)
>>>
>>> NTFS file system is used, Tomcat is installed in "D:\Program
>>> Files\Apache Software Foundation\Tomcat 6.0" folder, webapp is in
>>> "D:\Program Files\Apache Software Foundation\Tomcat
>>> 6.0\webapps\some_name" folder.
>>>
>>> This is content of server.xml, I believe that all other conf files are
>>> at their default values (except for pwd in users file), feel free to
>>> ask for any other conf file.
>>>
>>> <?xml version='1.0' encoding='utf-8'?>
>>> <Server port="8005" shutdown="SHUTDOWN">
>>>
>>>     <Listener className="org.apache.catalina.core.AprLifecycleListener"
>>> SSLEngine="on" />
>>>     <Listener className="org.apache.catalina.core.JasperListener" />
>>>     <Listener
>>> className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
>>>     <Listener
>>> className="org.apache.catalina.mbeans.ServerLifecycleListener" />
>>>     <Listener
>>> className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
>>>
>>>
>>>     <GlobalNamingResources>
>>>       <Resource name="UserDatabase" auth="Container"
>>>                 type="org.apache.catalina.UserDatabase"
>>>                 description="User database that can be updated and saved"
>>>
>>> factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
>>>                 pathname="conf/tomcat-users.xml" />
>>>       <Resource name="jdbc/SomeDB" auth="Container"
>>> type="javax.sql.DataSource"
>>>            maxActive="48"
>>>            maxIdle="10"
>>>            maxWait="10000"
>>>            driverClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver"
>>>            username="auser"
>>>            password="*********"
>>>
>>> url="jdbc:sqlserver://**.***.*.**:1433;databaseName=SomeName;loginTimeout=5"
>>>
>>>            removeAbandoned="true"
>>>            removeAbandonedTimeout="60"
>>>            logAbandoned="true"
>>>            validationQuery="SELECT 1"/>
>>>       <Resource name="jdbc/SomeDB2" auth="Container"
>>> type="javax.sql.DataSource"
>>>            maxActive="48"
>>>            maxIdle="10"
>>>            maxWait="10000"
>>>            driverClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver"
>>>            username="auser2"
>>>            password="**********"
>>>            url="jdbc:sqlserver://**.***.*.**:1433;databaseName=SomeName2"
>>>            removeAbandoned="true"
>>>            removeAbandonedTimeout="60"
>>>            logAbandoned="true"
>>>            validationQuery="SELECT 1"/>
>>>
>>>     </GlobalNamingResources>
>>>
>>>     <Service name="Catalina">
>>>
>>>       <Connector port="8080" protocol="HTTP/1.1"
>>>                  connectionTimeout="20000"
>>>                  redirectPort="8443" />
>>>       <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
>>>
>>>       <Engine name="Catalina" defaultHost="localhost">
>>>
>>>         <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
>>>                resourceName="UserDatabase"/>
>>>
>>>         <Host name="localhost"  appBase="webapps"
>>>               unpackWARs="true" autoDeploy="true"
>>>               xmlValidation="false" xmlNamespaceAware="false">
>>>
>>>           <Valve className="org.apache.catalina.valves.AccessLogValve"
>>> directory="logs"
>>>                  prefix="localhost_access_log." suffix=".txt"
>>> pattern="common" resolveHosts="false"/>
>>>
>>>      <Context path="/some_webapp" docBase="/some_webapp" debug="0"
>>> reloadable="true" crossContext="true">
>>>      <ResourceLink global="jdbc/SomeDB" name="jdbc/SomeDB"
>>> type="javax.sql.DataSource" />
>>>      <ResourceLink global="jdbc/SomeDB2" name="jdbc/SomeDB2"
>>> type="javax.sql.DataSource" />
>>>           </Context>
>>>         </Host>
>>>       </Engine>
>>>     </Service>
>>> </Server>
>>>
>>> Let me know if I can provide any more info or update bugzilla (don't
>>> have acc but can open).
>>>
>>> Thanks to all for your quick responses and help.
>>> --
>>> Tomy<t.petrovic@inet.hr>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>> For additional commands, e-mail: users-help@tomcat.apache.org
>>>
>>>
>>>
>>
>> Forgot to say:
>> Tomcat service is started with following parameters:
>>
>> JVM: have to check whether server or client, not sure at the moment.
>
> Server, one would hope.  Did you find out the exact version?
>
>> Classpath: D:\Program Files\Apache Software Foundation\Tomcat
>> 6.0\bin\bootstrap.jar
>>
>> JavaOptions:
>> -Dcatalina.home=D:\Program Files\Apache Software Foundation\Tomcat 6.0
>> -Dcatalina.base=D:\Program Files\Apache Software Foundation\Tomcat 6.0
>> -Djava.endorsed.dirs=D:\Program Files\Apache Software Foundation\Tomcat
>> 6.0\endorsed
>
> Do you actually have an 'endorsed' directory in your Tomcat
> installation?  What's in it if you do?
>

No I don't, this folder doesn't exist, will have to investigate who put 
it in here.

>> -Djava.io.tmpdir=D:\Program Files\Apache Software Foundation\Tomcat
>> 6.0\temp
>> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
>> -Djava.util.logging.config.file=D:\Program Files\Apache Software
>> Foundation\Tomcat 6.0\conf\logging.properties
>> -XX:NewSize=16m
>> -XX:MaxNewSize=16m
>
> That seems small.  Do you know why those values are set?
>

Have to ask guy who installed it (installation was done by customer IT, 
not me :(). What are acceptable values for these and what do they 
influence (maybe should be left to defaults?)?:

>> -Xms512m
>> -Xmx512m
>> -Xincgc
>
> That's probably not the best choice of garbage collector if you have a
> new JVM and multiple processors/cores.
>

Can you please point me in some doc documentation why it isn't ok cause 
we had better experience with incgc than default one on our load tests.


--
Tomy <t.petrovic@inet.hr>

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