Hello,
I'm using HttpClient V2.0 on Sun Solaris/WebLogic7.0
The code I am using is:-
HttpClient httpClient = new HttpClient(new
MultiThreadedHttpConnectionManager());
httpClient.getHostConfiguration().setHost(host, port);
HttpMethod httpMethod = new GetMethod(url);
httpClient.executeMethod(httpMethod);
httpMethod.releaseConnection();
The problem I am facing is that after around 2000 connections, this
results in java.lang.OutOfMemoryError.
Looks like, even after call is made and finished by calling
releaseConnection() method, the thread does not get finished and keeps
on waiting forever. Hence it creates a thread every time this
functionality is called.
The weblogic's RequestDispatcher then throws the exception:
javax.servlet.ServletException: unable to create new native thread
I have a wrapper class to HttpClient API & create only one connection
per HttpClient object, so I think using
MultiThreadedHttpConnectionManager is NOT required.
Please could you have a look at this and let me know your thoughts on
this. Could I simply use HttpClient's default constructor without
MultiThreading?
Thanks a lot, in advance.
Regards,
Jaya
The logs are as follows.
--------------------------------
####<29-Nov-05 11:57:54 GMT> <Error> <HTTP> <btnsc003-ukbg>
<managed1_blwlp001> <ExecuteThread: '1' for queue: 'default'> <kernel
identity>
<> <101020>
<[ServletContext(id=4834778,name=btportal_webapp,context-path=/btPortal)
] Servlet failed with Exception>
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start(Native Method)
at
org.apache.commons.httpclient.util.TimeoutController.execute(TimeoutCont
roller.java:95)
at
org.apache.commons.httpclient.util.TimeoutController.execute(TimeoutCont
roller.java:116)
at
org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:67
5)
at
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpCon
nectionAdapter.open(MultiThreadedHttpConnectionManager.ja
va:959)
at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:6
61)
at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:5
29)
at
com.bt.btcom.domain.dao.HttpClientDAO.executeMethod(HttpClientDAO.java:4
65)
at
com.bt.btcom.domain.dao.HttpClientDAO.executeConnection(HttpClientDAO.ja
va:308)
at
com.bt.btcom.presentation.util.tsso.BVUrlConnectionHelper.openDAOConnect
ion(BVUrlConnectionHelper.java:114)
at
com.bt.btcom.presentation.util.tsso.BVUrlConnectionHelper.getResponse(BV
UrlConnectionHelper.java:52)
at
com.bt.btcom.presentation.util.tsso.BVLoginHelper.login(BVLoginHelper.ja
va:103)
at
com.bt.btcom.presentation.util.tsso.ApplicationContext.processLogin(Appl
icationContext.java:99)
at
com.bt.btcom.presentation.util.tsso.SingleSignOn.login(SingleSignOn.java
:92)
at
com.bt.btcom.presentation.util.tsso.SSOFilter.doFilter(SSOFilter.java:14
5)
at
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:
27)
at
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.r
un(WebAppServletContext.java:5523)
at
weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceMa
nager.java:685)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServl
etContext.java:3156)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.
java:2506)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)
####<29-Nov-05 11:57:54 GMT> <Error> <HTTP> <btnsc003-ukbg>
<managed1_blwlp001> <ExecuteThread: '1' for queue: 'default'> <kernel
identity>
<> <101107>
<[ServletContext(id=4834778,name=btportal_webapp,context-path=/btPortal)
] Problem sending error page>
javax.servlet.ServletException: unable to create new native thread
at
weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatche
rImpl.java:327)
at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseI
mpl.java:517)
at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseI
mpl.java:370)
at
weblogic.servlet.internal.WebAppServletContext.handleException(WebAppSer
vletContext.java:3374)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServl
etContext.java:3202)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.
java:2506)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:234)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:210)
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