Hi Andrew,
I had the error as well....
Simone
----- Original Message -----
From: "Andrew May" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, April 01, 2003 8:40 AM
Subject: Re: [JBoss-user] CMR Error under load
> Simone,
>
> I manually inserted a couple of records. e.g.:
>
> INSERT INTO Parent VALUES ('test1');
> INSERT INTO Child (id, name, value, parentid) VALUES ('test1:name1',
'name1', 'value1',
> 'test1');
>
> And that was enough data to recreate the problem. The test was then called
with
>
> java com.ingenta.acs.test.ejb.CMRTest test1 30 100
>
> - that's with a parent pk of test1, 30 threads each doing 100 loops. The
classpath has
> test.jar, all the necessary JBOSS client jars, and a jndi.properties
containing a provider
> url.
>
> For every successful record it will print the returned name/value pairs
from the child.
> For every failure it will print the error message (the full stack trace
should be in the
> server log).
>
> Thanks for having a look at this - I've had to wait for our firewall to be
opened up
> before I can build the latest 3.2 code from CVS.
>
> Andrew
>
> Simone Milani wrote:
>
> > Hi Andrew,
> >
> > I am trying your test, do you have a script to populate the tables
and
> > the parameters for the CMRTestClass?
> >
> > Thanks
> >
> > Simone
> > ----- Original Message -----
> > From: "Andrew May" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Monday, March 31, 2003 2:46 PM
> > Subject: Re: [JBoss-user] CMR Error under load
> >
> >
> >
> >>I don't see a RC5 release on sourceforge, so I assume this means I have
to
> >
> > build it from
> >
> >>CVS. I'll give that a go, but as I've never tried it before it could
take
> >
> > me a while
> >
> >>(never actually used CVS I confess) - still it's something I ought to be
> >
> > able to do.
> >
> >>If anyone has a chance to run my test on this version of JBoss I'd be
> >
> > grateful - it'll
> >
> >>probably be at least a day before I get that far.
> >>
> >>Andrew
> >>
> >>Alex Loubyansky wrote:
> >>
> >>
> >>>Could you, please, try it on JBoss-3.2.0RC5 which is the current
> >>>version.
> >>>I have a testcase that failed in my old 3.2 and passes in current
> >>>3.2.0RC5.
> >>>
> >>>Please, try it.
> >>>
> >>>alex
> >>>
> >>>Monday, March 31, 2003, 12:37:32 PM, Andrew May wrote:
> >>>
> >>>AM> OK, here's a test case that recreates the problem for me.
> >>>
> >>>AM> I've attached test.jar which is the ejb-jar and also includes the
> >
> > test case class. Also
> >
> >>>AM> attached is test-src.jar which has the source code for the EJBs and
> >
> > the test. I'm afraid
> >
> >>>AM> I've been hacking around existing build scripts to create the test
> >
> > so I've not included
> >
> >>>AM> any way of building the code. I'm using an older version of
XDoclet.
> >>>
> >>>AM> There are 2 entities, Parent and Child. The CMRTest class creates
> >
> > multiple threads to call
> >
> >>>AM> the getPropertyMap() method on the Parent. This method iterates
> >
> > around the CMR collection
> >
> >>>AM> of children, and when multiple threads are run causes occasional
CMR
> >
> > errors.
> >
> >>>AM> In jbosscmp-jdbc.xml the datasource is java:/jdbc.testPool and the
> >
> > mapping is for Oracle8.
> >
> >>>AM> My test doesn't create the test data, so I've manually inserted
data
> >
> > before running the
> >
> >>>AM> test. I've found that it's only necessary to have one child record
> >
> > to recreate the problem.
> >
> >>>AM> The CMRTest class takes 3 arguments - the parent primary key,
number
> >
> > of threads, number of
> >
> >>>AM> loops per thread. e.g.:
> >>>
> >>>AM> java com.ingenta.acs.test.ejb.CMRTest test1 30 100
> >>>
> >>>AM> 30 threads with 100 loops always causes at least one CMR error for
> >
> > me. I've tested on two
> >
> >>>AM> setups, both of which cause errors.
> >>>
> >>>AM> 1) Solaris, Sun JDK1.3.1, JBoss 3.2.0RC3, Oracle 8.1.7.2.0
> >>>AM> 2) Linux (Mandrake 9), Sun JDK1.4.1, JBoss 3.2.0RC4, Oracle
> >
> > 8.1.7.2.0
> >
> >>>AM> jboss.xml in the ejb-jar declares all get* methods to be read-only.
> >
> > If I remove this the
> >
> >>>AM> CMR error does not occur, but the test goes a lot slower.
> >>>
> >>>AM> Let me know if there's any more information you need.
> >>>
> >>>AM> Andrew
> >>>
> >>>AM> Dain Sundstrom wrote:
> >>>
> >>>
> >>>
> >>>>>I fixed a similar bug in this stuff for Sacha on March 19th (version
> >>>>>1.43.2.13). The problem was registering for transaction
> >
> > synchronization
> >
> >>>>>on the transaction in the context and not the transaction associated
> >>>>>with the current thread. This bug created the type of problem you
have
> >>>>>described, but the fix should bin in 3.2 rc4.
> >>>>>
> >>>>>Until someone can create a test case that reproduces the new bug, I
> >>>>>don't think there is much we can do.
> >>>>>
> >>>>>-dain
> >>>>>
> >>>>>On Friday, March 28, 2003, at 10:01 AM, Alex Loubyansky wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>>Hello Andrew,
> >>>>>>
> >>>>>>you are not alone complaining about this. But nobody could produce a
> >>>>>>testcase that fail at least eventually.
> >>>>>>
> >>>>>>I am trying to reproduce it but can't for the moment.
> >>>>>>
> >>>>>>I have a Parent and 1000 of related Child entities.
> >>>>>>I have 100 concurrent threads finding parent by primary key, getting
> >>>>>>children and iterating through relation collection.
> >>>>>>I use standard container for both Parent and Child.
> >>>>>>In jboss.xml get methods are read-only for both Parent and Child.
> >>>>>>
> >>>>>>Any more info you can provide? Again a testcase would be great. Let
it
> >>>>>>fail not each time but eventually.
> >>>>>>
> >>>>>>Thank you,
> >>>>>>alex
>
>
>
>
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