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From Yogesh Patel <yogesh.r.pa...@highq.com>
Subject Regarding StuckThreadDetectionValve
Date Mon, 05 Oct 2015 06:54:49 GMT
        We are facing issues with long running thread in tomcat . we are
using Tomcat-7.0.47.Tomcat manager shows Current busy threads : 200,
application  gets stucked due to these long running threads.
         We implemented StuckThreadDetectionValve in server.xml( <Valve

    className="org.apache.catalina.valves.StuckThreadDetectionValve"

    threshold="60" />), but it  could not help out.
       So we implemented custom StuckThreadDetectionValve by extending
StuckThreadDetectionValve from
catalina, it only goes to "constructor","initInternal",and in "invoke"(when
action fires), it does not go to function "getStuckThreadNames()" even
after threshold time.How to achieve the same.Is there any way to detect
stucked thread and kill them?

  My custom Valve is like following :

public class StuckThreadDetection extends StuckThreadDetectionValve
{
StuckThreadDetection stuckThreadDetection;

public StuckThreadDetection()
{
System.out.println("in StuckThreadDetection constructor");

}

public void invoke(Request request, Response response) throws IOException,
ServletException
{
System.out.println("in invoke...");

getNext().invoke(request, response);
}

@Override
protected void initInternal() throws LifecycleException
{
System.out.println("In initInternal");
super.initInternal();
}

@Override
public String[] getStuckThreadNames()
{
System.out.println("in getStuckThreadNames...");
String[] listStuckedThread = this.getStuckThreadNames();

for (String threadName : listStuckedThread)
{
System.out.println(threadName);
}

return listStuckedThread;

}

@Override
public String getInfo()
{
System.out.println("In getInfo");
return super.getInfo();
}
}




-- 
*Thanks & Regards,*

* Yogesh Patel*

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