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Posted to users@maven.apache.org by DCVer <ke...@o2.pl> on 2007/10/16 15:22:55 UTC
Strange dataBase error
Hi all,
I have really strange error, which I try to solve for weeks. We have tested
our software (mvn test or mvn install) on many machines, but if we deploy it
on the server some of the tests fail. In fact all test, which fail need to
communicate with the data base. Although we have configured the data base
about 100 times and used our local databases, where local tests do not fail,
we still receive errors from tests on deployment server. We use PostgreSQL
(8.1) and Hibernate (version 3.2.5.ga of the dependency jar). So all signs
on the sky suggest that this is a communication with the data base problem,
although data base is installed on the same server and hibernate configs
seems to be correct. Maybe this a Maven bug, which in some specific
environment fails e.g. to copy resource file (with data base config) to jar
or for test? Have no idea what else can be wrong ;(
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Re: Strange dataBase error
Posted by Wayne Fay <wa...@gmail.com>.
If you haven't "locked down" your dependency versions, it is possible
that someone has "polluted" their local repo cache with SNAPSHOT
versions of some of them, etc. It is not absolutely true that every
build across a group of machines will necessarily produce the exact
same artifact.
Also it is very easy to introduce build differences through profile
activation etc. So don't assume anything without verifying it.
Wayne
On 10/17/07, DCVer <ke...@o2.pl> wrote:
>
> Thanks for the answer, I will take a look at this issue. On every machine I
> build jars using command mvn install (I have multi-level project and few
> jars are created)
>
>
> Wayne Fay wrote:
> >
> > If the Jars and code etc is the same, there must be an environmental
> > difference between the machines where the tests pass and where the
> > tests fail.
> >
> > Are you building the Jar(s) repeatedly (on different machines) or just
> > building once and then re-using that built code in your various tests?
> > If you're not re-using the same Jar, then you really can't be sure
> > about anything. So build it once and then use that for testing.
> >
> > Also, perhaps you should unzip a Jar that works and a Jar that doesn't
> > work, and run a diff/compare tool against the 2 directories. There
> > might be some differences that you weren't expecting.
> >
> > Wayne
> >
> > On 10/16/07, DCVer <ke...@o2.pl> wrote:
> >>
> >> Hi all,
> >> I have really strange error, which I try to solve for weeks. We have
> >> tested
> >> our software (mvn test or mvn install) on many machines, but if we deploy
> >> it
> >> on the server some of the tests fail. In fact all test, which fail need
> >> to
> >> communicate with the data base. Although we have configured the data base
> >> about 100 times and used our local databases, where local tests do not
> >> fail,
> >> we still receive errors from tests on deployment server. We use
> >> PostgreSQL
> >> (8.1) and Hibernate (version 3.2.5.ga of the dependency jar). So all
> >> signs
> >> on the sky suggest that this is a communication with the data base
> >> problem,
> >> although data base is installed on the same server and hibernate configs
> >> seems to be correct. Maybe this a Maven bug, which in some specific
> >> environment fails e.g. to copy resource file (with data base config) to
> >> jar
> >> or for test? Have no idea what else can be wrong ;(
> >> --
> >> View this message in context:
> >> http://www.nabble.com/Strange-dataBase-error-tf4634191s177.html#a13233541
> >> Sent from the Maven - Users mailing list archive at Nabble.com.
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> >> For additional commands, e-mail: users-help@maven.apache.org
> >>
> >>
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
> >
> >
> >
>
> --
> View this message in context: http://www.nabble.com/Strange-dataBase-error-tf4634191s177.html#a13250907
> Sent from the Maven - Users mailing list archive at Nabble.com.
>
>
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Re: Strange dataBase error
Posted by DCVer <ke...@o2.pl>.
Thanks for the answer, I will take a look at this issue. On every machine I
build jars using command mvn install (I have multi-level project and few
jars are created)
Wayne Fay wrote:
>
> If the Jars and code etc is the same, there must be an environmental
> difference between the machines where the tests pass and where the
> tests fail.
>
> Are you building the Jar(s) repeatedly (on different machines) or just
> building once and then re-using that built code in your various tests?
> If you're not re-using the same Jar, then you really can't be sure
> about anything. So build it once and then use that for testing.
>
> Also, perhaps you should unzip a Jar that works and a Jar that doesn't
> work, and run a diff/compare tool against the 2 directories. There
> might be some differences that you weren't expecting.
>
> Wayne
>
> On 10/16/07, DCVer <ke...@o2.pl> wrote:
>>
>> Hi all,
>> I have really strange error, which I try to solve for weeks. We have
>> tested
>> our software (mvn test or mvn install) on many machines, but if we deploy
>> it
>> on the server some of the tests fail. In fact all test, which fail need
>> to
>> communicate with the data base. Although we have configured the data base
>> about 100 times and used our local databases, where local tests do not
>> fail,
>> we still receive errors from tests on deployment server. We use
>> PostgreSQL
>> (8.1) and Hibernate (version 3.2.5.ga of the dependency jar). So all
>> signs
>> on the sky suggest that this is a communication with the data base
>> problem,
>> although data base is installed on the same server and hibernate configs
>> seems to be correct. Maybe this a Maven bug, which in some specific
>> environment fails e.g. to copy resource file (with data base config) to
>> jar
>> or for test? Have no idea what else can be wrong ;(
>> --
>> View this message in context:
>> http://www.nabble.com/Strange-dataBase-error-tf4634191s177.html#a13233541
>> Sent from the Maven - Users mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
>> For additional commands, e-mail: users-help@maven.apache.org
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
>
>
--
View this message in context: http://www.nabble.com/Strange-dataBase-error-tf4634191s177.html#a13250907
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Re: Strange dataBase error
Posted by Wayne Fay <wa...@gmail.com>.
If the Jars and code etc is the same, there must be an environmental
difference between the machines where the tests pass and where the
tests fail.
Are you building the Jar(s) repeatedly (on different machines) or just
building once and then re-using that built code in your various tests?
If you're not re-using the same Jar, then you really can't be sure
about anything. So build it once and then use that for testing.
Also, perhaps you should unzip a Jar that works and a Jar that doesn't
work, and run a diff/compare tool against the 2 directories. There
might be some differences that you weren't expecting.
Wayne
On 10/16/07, DCVer <ke...@o2.pl> wrote:
>
> Hi all,
> I have really strange error, which I try to solve for weeks. We have tested
> our software (mvn test or mvn install) on many machines, but if we deploy it
> on the server some of the tests fail. In fact all test, which fail need to
> communicate with the data base. Although we have configured the data base
> about 100 times and used our local databases, where local tests do not fail,
> we still receive errors from tests on deployment server. We use PostgreSQL
> (8.1) and Hibernate (version 3.2.5.ga of the dependency jar). So all signs
> on the sky suggest that this is a communication with the data base problem,
> although data base is installed on the same server and hibernate configs
> seems to be correct. Maybe this a Maven bug, which in some specific
> environment fails e.g. to copy resource file (with data base config) to jar
> or for test? Have no idea what else can be wrong ;(
> --
> View this message in context: http://www.nabble.com/Strange-dataBase-error-tf4634191s177.html#a13233541
> Sent from the Maven - Users mailing list archive at Nabble.com.
>
>
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> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
>
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