re: NullPointerException in Jetty when using Comet
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jori
May 10, 2011, 3:16:25 PM5/10/11
to Lift
I am also seeing this issue reported in this thread:
http://groups.google.com/group/liftweb/browse_thread/thread/5bd62ec23e29153a
INFO - Service request (GET) /comet_request/11229338523/bni3exhia1x3/
F145452833030NZTITH returned 500, took 3 Milliseconds
ERROR - Exception being returned to browser when processing /xml/edit/
1058: Message: java.lang.NullPointerException
org.mortbay.jetty.Request.getServerName(Request.java:1112)
org.mortbay.jetty.Request.getServerPort(Request.java:1169)
net.liftweb.http.provider.servlet.HTTPRequestServlet.serverPort(HTTPRequestServlet.scala:
92)
net.liftweb.http.Req$$anonfun$hostAndPath$1.apply(Req.scala:
968)
net.liftweb.http.Req$$anonfun$hostAndPath$1.apply(Req.scala:
968)
net.liftweb.common.Full.map(Box.scala:478)
net.liftweb.http.Req.hostAndPath(Req.scala:968)
net.liftweb.http.LiftSession$$anonfun$cometForHost
$1.apply(LiftSession.scala:615)
net.liftweb.http.LiftSession$$anonfun$cometForHost
$1.apply(LiftSession.scala:614)
scala.collection.TraversableLike$$anonfun$filter
$1.apply(TraversableLike.scala:240)
scala.collection.LinearSeqOptimized
$class.foreach(LinearSeqOptimized.scala:61)
scala.collection.immutable.List.foreach(List.scala:45)
scala.collection.TraversableLike
$class.filter(TraversableLike.scala:239)
scala.collection.immutable.List.filter(List.scala:45)
net.liftweb.http.LiftSession.cometForHost(LiftSession.scala:
614)
net.liftweb.http.LiftRules$$anonfun$6.apply(LiftRules.scala:
260)
net.liftweb.http.LiftRules$$anonfun$6.apply(LiftRules.scala:
257)
net.liftweb.http.LiftRules$class.net$liftweb$http$LiftRules$
$_getLiftSession(LiftRules.scala:248)
net.liftweb.http.LiftRules$$anonfun$4.apply(LiftRules.scala:
205)
net.liftweb.http.LiftRules$$anonfun$4.apply(LiftRules.scala:
205)
net.liftweb.http.LiftServlet.getLiftSession(LiftServlet.scala:
69)
net.liftweb.http.LiftServlet.doService(LiftServlet.scala:258)
net.liftweb.http.LiftServlet$$anonfun$doIt
$1$1.apply(LiftServlet.scala:122)
net.liftweb.http.LiftServlet$$anonfun$doIt
$1$1.apply(LiftServlet.scala:121)
net.liftweb.util.TimeHelpers$class.calcTime(TimeHelpers.scala:
344)
net.liftweb.util.Helpers$.calcTime(Helpers.scala:34)
...
I'm using Lift 2.3, Scala 2.8.1, and Jetty 6.1.22.
thank you
Antonio Salazar Cardozo
May 10, 2011, 3:20:32 PM5/10/11
to lif...@googlegroups.com
We have also seen this, but haven't been able to reliably determine how to reproduce it, thus why we haven't said anything. It's very unclear why this happens at the moment, and also very inconsistent. I *believe* it is load-related, but haven't been keeping close track yet.
Thanks,
Antonio
YoJimbo
May 10, 2011, 4:57:09 PM5/10/11
to Lift
Hi
I am not a Java or Scala developer, but I have seen this when
initially load testing ahead of our first release, using either the
jetty from ubuntu repos or the latest from the 6 series downloaded
from the jetty website. When this happened we were running Lift
release candidates of the 2.2 branch - we are now 2.3 stable.
At the time I also ran the same production code that was throwing this
error on tomcat7 and did not see any issues or exceptions thrown,
whilst running the same load tests.
So I can only assume this is a jetty issue.
After this, I moved from using jetty6 to using the hightide6 version
jetty (http://dist.codehaus.org/jetty/jetty-hightide-6.1/hightide-6.1H.
24.tgz), and I have not seen this issue again. That said, we have made
a number of other tweaks to our production settings (like we have
tripled the default actor thread pool limit) and moving Lift version.
Also I guess just do all the basics checks as well - double checking
the servers /etc/hosts is correctly configured, specify our jetty port
in our /etc/default/jetty and also that we have nginx as a reverse
proxy properly configured to pass requests to jetty... in-case
anything basic environmental on the box is bumping into an issue in
jetty.
Jp
On May 10, 1:16 pm, jori <j...@dimensiology.com> wrote:
> I am also seeing this issue reported in this thread:
>
> http://groups.google.com/group/liftweb/browse_thread/thread/5bd62ec23...
I am not a Java or Scala developer, but I have seen this when
initially load testing ahead of our first release, using either the
jetty from ubuntu repos or the latest from the 6 series downloaded
from the jetty website. When this happened we were running Lift
release candidates of the 2.2 branch - we are now 2.3 stable.
At the time I also ran the same production code that was throwing this
error on tomcat7 and did not see any issues or exceptions thrown,
whilst running the same load tests.
So I can only assume this is a jetty issue.
After this, I moved from using jetty6 to using the hightide6 version
jetty (http://dist.codehaus.org/jetty/jetty-hightide-6.1/hightide-6.1H.
24.tgz), and I have not seen this issue again. That said, we have made
a number of other tweaks to our production settings (like we have
tripled the default actor thread pool limit) and moving Lift version.
Also I guess just do all the basics checks as well - double checking
the servers /etc/hosts is correctly configured, specify our jetty port
in our /etc/default/jetty and also that we have nginx as a reverse
proxy properly configured to pass requests to jetty... in-case
anything basic environmental on the box is bumping into an issue in
jetty.
Jp
On May 10, 1:16 pm, jori <j...@dimensiology.com> wrote:
> I am also seeing this issue reported in this thread:
>
David Pollak
May 11, 2011, 1:53:47 PM5/11/11
to lif...@googlegroups.com
This issue was raised at least once before. As YoJimbo says, we think it's a Jetty issue. If you can find a way to reliably reproduce it, we'll at least work around the issue.
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David Pollak
May 11, 2011, 1:54:19 PM5/11/11
to lif...@googlegroups.com
This issue was raised at least once before. As YoJimbo says, we think it's a Jetty issue. If you can find a way to reliably reproduce it, we'll at least work around the issue.
On Tue, May 10, 2011 at 12:16 PM, jori <jo...@dimensiology.com> wrote:
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Sergey Trofimov
Jul 8, 2011, 12:28:51 PM7/8/11
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Well, it looks like it's stably reproduced in my current project with Jetty 6.1.24, Scala 2.9.0-1 and Lift 2.4-M2.
How can we try to work around this?
--
Sergey
How can we try to work around this?
--
Sergey
David Pollak
Jul 8, 2011, 12:37:03 PM7/8/11
to lif...@googlegroups.com
On Fri, Jul 8, 2011 at 9:28 AM, Sergey Trofimov <sergey....@gmail.com> wrote:
Well, it looks like it's stably reproduced in my current project with Jetty 6.1.24, Scala 2.9.0-1 and Lift 2.4-M2.
How can we try to work around this?
If you can post example code (see Posting example code | Lift Space | Assembla ) that reproduces the issue, I'll look into it.
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Sergey Trofimov
Jul 8, 2011, 1:18:29 PM7/8/11
to lif...@googlegroups.com
I think I can only provide project sources directly to you, is it solution?
Also, unfortunately, steps to reproduce are not strongly determined, we open app in different browsers and use it, and in some moment app goes out of control starting generating exceptions. Is it OK for you to look into it with such conditions?
Also, unfortunately, steps to reproduce are not strongly determined, we open app in different browsers and use it, and in some moment app goes out of control starting generating exceptions. Is it OK for you to look into it with such conditions?
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David Pollak
Jul 8, 2011, 1:26:25 PM7/8/11
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You can send me the code privately. I don't have a lot of time to spend on it as I'm heading off for vacation. If I can't reproduce the issue in 10 minutes or so, I'm going to give up on it. Also, the issue appears to be a Jetty issue, not a Lift issue, so perhaps getting the Jetty folks to look at it or at least try Jetty 7 may be another alternative.
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Sergey Trofimov
Jul 8, 2011, 1:53:13 PM7/8/11
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Well, I'll play with different containers firstly.
Thank you.
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Sergey
Thank you.
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Antonio Salazar Cardozo
Jul 8, 2011, 3:51:19 PM7/8/11
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Do post if you find that Jetty 7 fixes the issue. I haven't gotten a chance to check yet, but it's a change that we need to make as well, as we've been seeing this issue sporadically, as well.
Thanks,
Antonio
Sergey Trofimov
Jul 8, 2011, 4:24:49 PM7/8/11
to lif...@googlegroups.com
Sure, I'll post my results here.
--
Sergey
--
Sergey
elsten software
Jul 12, 2011, 4:44:22 AM7/12/11
to Lift
Thanks for reposting this, it's good to know a few other people are
getting this!
I had a quick look at what might cause it in the Jetty code and, from
memory, it appeared to be something related to the recycling of
requests. I'm not sure if this is related to the continuation support
in some way, but that's just idle speculation.
Looking forward to seeing your results Sergey.
Dan
getting this!
I had a quick look at what might cause it in the Jetty code and, from
memory, it appeared to be something related to the recycling of
requests. I'm not sure if this is related to the continuation support
in some way, but that's just idle speculation.
Looking forward to seeing your results Sergey.
Dan
Sergey Trofimov
Jul 16, 2011, 3:48:00 AM7/16/11
to lif...@googlegroups.com
Well, same issue in Jetty 7.4.4.v20110707.
Steps to reproduce still are not clear.
NPE is generated by 10-50 occurrences during short period of times (1-2 minutes) with 2-4 hours between periods (by logs of the last night)
2011-07-15 21:58:30,386 ERROR net.liftweb.http.LiftRules - Exception being returned to browser when processing Req(List(__lift__GC), Map(__lift__GC -> List(_)), ParsePath(List(ajax_request, F8581246073915SBAMD, index),,true,true), , PostRequest, Full(application/x-www-form-urlencoded; charset=UTF-8))
java.lang.NullPointerException: null
at org.eclipse.jetty.server.Request.getServerName(Request.java:981) ~[na:na]
at org.eclipse.jetty.server.Request.getServerPort(Request.java:1044) ~[na:na]
at net.liftweb.http.provider.servlet.HTTPRequestServlet.serverPort(HTTPRequestServlet.scala:92) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.Req$$anonfun$hostAndPath$1.apply(Req.scala:968) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.Req$$anonfun$hostAndPath$1.apply(Req.scala:968) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.common.Full.map(Box.scala:491) ~[lift-common_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.Req.hostAndPath(Req.scala:968) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftSession$$anonfun$cometForHost$1.apply(LiftSession.scala:576) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftSession$$anonfun$cometForHost$1.apply(LiftSession.scala:575) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at scala.collection.TraversableLike$$anonfun$filter$1.apply(TraversableLike.scala:213) ~[scala-library.jar:na]
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59) ~[scala-library.jar:na]
at scala.collection.immutable.List.foreach(List.scala:45) ~[scala-library.jar:na]
at scala.collection.TraversableLike$class.filter(TraversableLike.scala:212) ~[scala-library.jar:na]
at scala.collection.immutable.List.filter(List.scala:45) ~[scala-library.jar:na]
at net.liftweb.http.LiftSession.cometForHost(LiftSession.scala:575) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$7.apply(LiftRules.scala:292) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$7.apply(LiftRules.scala:289) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules.net$liftweb$http$LiftRules$$_getLiftSession(LiftRules.scala:280) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$5.apply(LiftRules.scala:237) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$5.apply(LiftRules.scala:237) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.getLiftSession(LiftServlet.scala:75) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.doService(LiftServlet.scala:270) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet$$anonfun$doIt$1$1.apply(LiftServlet.scala:128) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet$$anonfun$doIt$1$1.apply(LiftServlet.scala:127) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.TimeHelpers$class.calcTime(TimeHelpers.scala:344) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.Helpers$.calcTime(Helpers.scala:34) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.TimeHelpers$class.logTime(TimeHelpers.scala:363) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.Helpers$.logTime(Helpers.scala:34) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.doIt$1(LiftServlet.scala:127) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.service(LiftServlet.scala:138) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply$mcV$sp(HTTPProvider.scala:69) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply(HTTPProvider.scala:68) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply(HTTPProvider.scala:68) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.URLRewriter$.doWith(Req.scala:1234) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply$mcV$sp(HTTPProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply(HTTPProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply(HTTPProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$class.service(HTTPProvider.scala:63) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftFilter.service(LiftServlet.scala:753) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(ServletFilterProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply(ServletFilterProvider.scala:62) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply(ServletFilterProvider.scala:62) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18$$anonfun$apply$19.apply(Vars.scala:619) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18.apply(Vars.scala:618) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17.apply(Vars.scala:617) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16.apply(Vars.scala:616) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:615) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.RequestVarHandler$.apply(Vars.scala:515) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1.apply(ServletFilterProvider.scala:61) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1.apply(ServletFilterProvider.scala:61) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18$$anonfun$apply$19.apply(Vars.scala:619) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18.apply(Vars.scala:618) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17.apply(Vars.scala:617) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16.apply(Vars.scala:616) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:615) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$class.doFilter(ServletFilterProvider.scala:60) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftFilter.doFilter(LiftServlet.scala:753) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) [jetty-servlet-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) [jetty-servlet-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:480) [jetty-security-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:59) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:939) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406) [jetty-servlet-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:216) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.Server.handle(Server.java:346) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1065) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:823) [jetty-http-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220) [jetty-http-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535) [jetty-io-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) [jetty-io-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529) [jetty-util-7.4.4.v20110707.jar:7.4.4.v20110707]
at java.lang.Thread.run(Thread.java:662) [na:1.6.0_22]
Steps to reproduce still are not clear.
NPE is generated by 10-50 occurrences during short period of times (1-2 minutes) with 2-4 hours between periods (by logs of the last night)
2011-07-15 21:58:30,386 ERROR net.liftweb.http.LiftRules - Exception being returned to browser when processing Req(List(__lift__GC), Map(__lift__GC -> List(_)), ParsePath(List(ajax_request, F8581246073915SBAMD, index),,true,true), , PostRequest, Full(application/x-www-form-urlencoded; charset=UTF-8))
java.lang.NullPointerException: null
at org.eclipse.jetty.server.Request.getServerName(Request.java:981) ~[na:na]
at org.eclipse.jetty.server.Request.getServerPort(Request.java:1044) ~[na:na]
at net.liftweb.http.provider.servlet.HTTPRequestServlet.serverPort(HTTPRequestServlet.scala:92) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.Req$$anonfun$hostAndPath$1.apply(Req.scala:968) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.Req$$anonfun$hostAndPath$1.apply(Req.scala:968) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.common.Full.map(Box.scala:491) ~[lift-common_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.Req.hostAndPath(Req.scala:968) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftSession$$anonfun$cometForHost$1.apply(LiftSession.scala:576) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftSession$$anonfun$cometForHost$1.apply(LiftSession.scala:575) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at scala.collection.TraversableLike$$anonfun$filter$1.apply(TraversableLike.scala:213) ~[scala-library.jar:na]
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59) ~[scala-library.jar:na]
at scala.collection.immutable.List.foreach(List.scala:45) ~[scala-library.jar:na]
at scala.collection.TraversableLike$class.filter(TraversableLike.scala:212) ~[scala-library.jar:na]
at scala.collection.immutable.List.filter(List.scala:45) ~[scala-library.jar:na]
at net.liftweb.http.LiftSession.cometForHost(LiftSession.scala:575) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$7.apply(LiftRules.scala:292) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$7.apply(LiftRules.scala:289) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules.net$liftweb$http$LiftRules$$_getLiftSession(LiftRules.scala:280) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$5.apply(LiftRules.scala:237) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftRules$$anonfun$5.apply(LiftRules.scala:237) ~[lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.getLiftSession(LiftServlet.scala:75) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.doService(LiftServlet.scala:270) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet$$anonfun$doIt$1$1.apply(LiftServlet.scala:128) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet$$anonfun$doIt$1$1.apply(LiftServlet.scala:127) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.TimeHelpers$class.calcTime(TimeHelpers.scala:344) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.Helpers$.calcTime(Helpers.scala:34) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.TimeHelpers$class.logTime(TimeHelpers.scala:363) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.Helpers$.logTime(Helpers.scala:34) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.doIt$1(LiftServlet.scala:127) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftServlet.service(LiftServlet.scala:138) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply$mcV$sp(HTTPProvider.scala:69) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply(HTTPProvider.scala:68) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply(HTTPProvider.scala:68) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.URLRewriter$.doWith(Req.scala:1234) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply$mcV$sp(HTTPProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply(HTTPProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply(HTTPProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.HTTPProvider$class.service(HTTPProvider.scala:63) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftFilter.service(LiftServlet.scala:753) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(ServletFilterProvider.scala:67) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply(ServletFilterProvider.scala:62) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply(ServletFilterProvider.scala:62) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18$$anonfun$apply$19.apply(Vars.scala:619) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18.apply(Vars.scala:618) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17.apply(Vars.scala:617) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16.apply(Vars.scala:616) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:615) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.RequestVarHandler$.apply(Vars.scala:515) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1.apply(ServletFilterProvider.scala:61) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1.apply(ServletFilterProvider.scala:61) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18$$anonfun$apply$19.apply(Vars.scala:619) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17$$anonfun$apply$18.apply(Vars.scala:618) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16$$anonfun$apply$17.apply(Vars.scala:617) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$16.apply(Vars.scala:616) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71) [lift-util_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:615) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.provider.servlet.ServletFilterProvider$class.doFilter(ServletFilterProvider.scala:60) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at net.liftweb.http.LiftFilter.doFilter(LiftServlet.scala:753) [lift-webkit_2.9.0-1-2.4-M2.jar:2.4-M2]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) [jetty-servlet-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) [jetty-servlet-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:480) [jetty-security-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:59) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:939) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406) [jetty-servlet-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:216) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.Server.handle(Server.java:346) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1065) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:823) [jetty-http-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220) [jetty-http-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) [jetty-server-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535) [jetty-io-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) [jetty-io-7.4.4.v20110707.jar:7.4.4.v20110707]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529) [jetty-util-7.4.4.v20110707.jar:7.4.4.v20110707]
at java.lang.Thread.run(Thread.java:662) [na:1.6.0_22]
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