[Cs5500] [Cs4800] Warmup Tournament - 10pm tonight

[Dennis Zografos]

Hi Madhu,

Thanks for the prompt and useful reply.

I think I tracked this down, in a very general sense, to some sort 
of botched GenericSCG install.

While running a tournament server from a fresh GenericSCG.zip -> ant, 
with "my" avatar being the *exact* PlayerMainHSR and bin folder that 
I used in the warmup:

I didn't notice any problem in the first tournament with two of my 
avatars and a baby.  Then I upped the rounds to 30, and saw the 
exact "Exception thrown while parsing: 16", in various places 
(sometimes during proposals, sometimes during opposing turns).

At the Admin console, I saw a corresponding:

-----
Inside provide response
protocol interpreter step complete
Error: null
java.lang.NullPointerException
        at scg.game.BinaryGame.protocolResponseHandler(Unknown Source)
        at scg.game.BinaryGame.convert(Unknown Source)
        at scg.game.BinaryGame.start(Unknown Source)
        at scg.tournament.Tournament.startGame(Unknown Source)
        at scg.tournament.Tournament.run(Unknown Source)
        at java.lang.Thread.run(Thread.java:636)
-----

for each Exception thrown by my avatar.

I tried hardcoding values that my avatar would throw Exceptions near, 
but this did not prompt replication of the issue.

At some point, I copied my avatar's .beh and .cd to a fresh GenericSCG 
and built them there.  The resulting binaries appear free of this problem!

I revisited my bin folder from the warmup.  I tried running a tournament 
server from there -- all kinds of Exceptions and odd behavior! (I could not 
run a tournament to completion)

The GenericSCG.zip sourced was from before Thursday's warmup.  Judging only by 
date, it should be the same as: http://www.ccs.neu.edu/home/lieber/courses/
se-courses/cs5500/f11/projects/project-page/GenericSCG.zip (unless multiple 
versions were uploaded that day/night)


Another oddity: I could not clean build that install (ant clean; ant):
http://pastebin.com/AFEh251r

** This means that some of .beh files shipped are inconsistent with both the 
included pre-generated .java files, and the rest of the software! **

This is true of the currently posted GenericSCG.zip
(> ant clean; sh gen.sh; ant)


Users: don't run `gen.sh' on this release.
 Devs: Could we have a fixed release?




----- "Madhuvanthi Balasubramanian" <balasubramanian.m at husky.neu.edu> wrote:

> Dennis,
> 
> 
> 1.This is not how a kick-out message looks like. Kick-out messages
> have a short description of why you are kicked out and never print a
> stacktrace. This is an exception thrown from the createResponse
> method.
> 2. ParseException generally occurs when your response is given to
> demeterf to be parsed, and it is not able to successfully parse your
> response. Demeterf knows the signature of a perfect response and that
> is how it would try to fit the responses we send in. If any of its
> fields is not right, it throws such exceptions.
> 3. In the past, when we had encountered parsing errors, we had tried
> modifying our code, because there is no way we could go change a
> demeterf library. The error was almost always on our side.
> 
> 
> Yes, we do encounter parse exceptions, but not this one from the
> createResponse method. Let me forward your mail to my entire class and
> see if someone else has seen a similar issue.
> 
> 
> On Fri, Nov 11, 2011 at 10:46 PM, Dennis Zografos < dzog at ccs.neu.edu >
> wrote:
> 
> 
> Hi,
> 
> If you can not answer fully at this time, can I at /least/ get a
> quick response to either or both of the following:
> 
> 1) Is this what the "kicked out for legitimately bad behavior"
> messages look like? Or did I encounter something strange?
> 
> 2) What does "Exception thrown while parsing: 16" mean? Even in a
> broad, general sense?
> 
> 3) Should I be trying to debug my code, or yours?
> 
> 
> Has anyone else encountered this?
> 
> 
> 
> 
> 
> 
> ----- "Dennis Zografos" < dzog at zimbra.ccs.neu.edu > wrote:
> 
> > Strange things during tonight's warmup.
> >
> > Looks like I was kicked out of two games -- but I can't fathom why.
> > This is the same exact codebase I've been using for a week (with
> > the exception of yesterday's warmup where I fudged some provides
> > to a 1.0 quality to test the strengthening mechanic).
> >
> > When I was "kicked out", my avatar showed the following error:
> >
> > Exception thrown while parsing: 16
> > !! Exception: null
> > !! StackTrace:
> > -- scg.net.avatar.PlayerServer.createResponse(Unknown Source)
> > -- scg.net.avatar.PlayerServer.playerResponse(Unknown Source)
> > -- sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source)
> > --
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> > -- java.lang.reflect.Method.invoke(Method.java:616)
> > --
> >
> edu.neu.ccs.demeterf.http.server.ServerDispatch.handle(ServerDispatch.java:75)
> > --
> >
> edu.neu.ccs.demeterf.http.server.ServerThread$DispatchThread.run(ServerThread.java:130)
> >
> >
> > Is this what the kick-out errors look like? What went wrong here?
> >
> > Again, this is the same .beh I've been using in all the warmup
> > tournaments without issue.
> >
> >
> > (to help, maybe, here's the Exception in the context of my own debug
> > output:
> >
> > GET REQUEST11111
> > *solve(557,217): q=10
> > dt(557,217):0ms
> > truncate(557,217):0ms
> > enumerate(557,217):0ms
> > populate(557,217):0ms
> > *solve(37,698): q=6
> > dt(37,698):0ms
> > truncate(37,698):0ms
> > enumerate(37,698):0ms
> > populate(37,698):0ms
> > *solve(321,635): q=9
> > dt(321,635):0ms
> > truncate(321,635):0ms
> > enumerate(321,635):0ms
> > populate(321,635):0ms
> > *solve(419,439): q=9
> > dt(419,439):0ms
> > truncate(419,439):0ms
> > enumerate(419,439):0ms
> > populate(419,439):0ms
> > PROPOSING:
> > r P-hsr(719,127)q=0.013908205841446454
> > r P-hsr(969,623)q=0.010319917440660475
> > r P-hsr(685,580)q=0.014598540145985401
> > s P-hsr(95,4)q=0.07368421052631578
> > Contemplating:
> > C-hsr(798,180)q=0.012531328320802004
> > [agreed; q>=0.012531328320802004]
> > C-hsr(69,654)q=0.10144927536231885
> > [agreed; q>=0.10144927536231885]
> > C-hsr(255,2)q=0.09019607843137255
> > Exception thrown while parsing: 16
> > !! Exception: null
> > !! StackTrace:
> > -- scg.net.avatar.PlayerServer.createResponse(Unknown Source)
> > -- scg.net.avatar.PlayerServer.playerResponse(Unknown Source)
> > -- sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source)
> > --
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> > -- java.lang.reflect.Method.invoke(Method.java:616)
> > --
> >
> edu.neu.ccs.demeterf.http.server.ServerDispatch.handle(ServerDispatch.java:75)
> > --
> >
> edu.neu.ccs.demeterf.http.server.ServerThread$DispatchThread.run(ServerThread.java:130)
> >
> > )
> 
> 
> 
> 
> --
> Thanks
> - Madhu