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From Thomas Weise <thomas.we...@gmail.com>
Subject Re: javax.persistence.Persistence classNotFoundError
Date Sat, 07 May 2016 22:57:28 GMT
Hi Ananth,

Thanks for investigating this all the way. Can you please create a JIRA for
this bug?

Thanks,
Thomas

--
sent from mobile
On May 7, 2016 3:53 PM, "Ananth Gundabattula" <agundabattula@gmail.com>
wrote:

> Hello Thomas/Siyuan/David/Sandeep/Shubham,
>
>
> The issue was resolved by placing another jar instead of the
> javaee-api.jar in the apex-engines/lib folder. By pushing hibernate-jpa-api
> jar , I was able to get around this issue.
>
> However this is only a hack and I believe we might see this issue for all
> apps that have JSR 303 annotations in their code. It looks like Apex is
> using the classloader of the apex engine that loads only lib folder of the
> engine to verify the annotations ( annotations related to validation ) and
> not the application classpath.
>
>
> Thanks all for your time.
>
> Regards,
> Ananth
>
> On Thu, May 5, 2016 at 5:35 AM, Ananth Gundabattula <
> agundabattula@gmail.com> wrote:
>
>> Hello Thomas,
>>
>> Thanks for the input.
>>
>> I tried both the UI and the command line dtcli client . Both of them are
>> giving the same exact stack trace error.
>>
>> Regards,
>> Ananth
>>
>> On Thu, May 5, 2016 at 5:23 AM, Thomas Weise <thomas.weise@gmail.com>
>> wrote:
>>
>>> Hi Ananth,
>>>
>>> One possibility is the bval resolver not considering the context class
>>> loader when processing the annotation. Do you see the same issue when
>>> launching the application through the UI?
>>>
>>> Thanks,
>>> Thomas
>>>
>>>
>>> On Mon, May 2, 2016 at 2:35 PM, Ananth Gundabattula <
>>> agundabattula@gmail.com> wrote:
>>>
>>>> Hello Siyuan,
>>>>
>>>> Please find attached the output of the unzip -t command on the apa
>>>> package.
>>>>
>>>> The library jar is indeed present in there.
>>>>
>>>> What confuses me here is that the stack trace suggests that it is
>>>> coming when the engine is validating the App ( and not from my application
>>>> code). I am suspecting one of the following is causing this :
>>>>
>>>>
>>>>    - the bval ( JSR 303 ) jar validation path  is somehow conflicting
>>>>    with the JPA validation framework and is causing this issue but am not
>>>>    sure.
>>>>    - CDH 5.7 might have changed restructured a few jars ?? ( I am not
>>>>    sure of this either as I am not sure how Apex uses the underlying Hadoop
>>>>    distribution jars )
>>>>
>>>> Pasting the stack trace once more here for reference:
>>>>
>>>> An error occurred trying to launch the application. Server message:
>>>> java.lang.NoClassDefFoundError: javax/persistence/Persistence at
>>>> org.apache.bval.jsr303.resolver.JPATraversableResolver.isReachable(JPATraversableResolver.java:34)
>>>> at
>>>> org.apache.bval.jsr303.resolver.DefaultTraversableResolver.isReachable(DefaultTraversableResolver.java:60)
>>>> at
>>>> org.apache.bval.jsr303.resolver.CachingTraversableResolver.isReachable(CachingTraversableResolver.java:82)
>>>> at
>>>> org.apache.bval.jsr303.ConstraintValidation.isReachable(ConstraintValidation.java:241)
>>>> at
>>>> org.apache.bval.jsr303.ConstraintValidation.validate(ConstraintValidation.java:166)
>>>> at
>>>> org.apache.bval.jsr303.ConstraintValidation.validate(ConstraintValidation.java:141)
>>>> at
>>>> org.apache.bval.util.ValidationHelper.validateProperty(ValidationHelper.java:233)
>>>> at
>>>> org.apache.bval.util.ValidationHelper.validateBean(ValidationHelper.java:216)
>>>> at
>>>> org.apache.bval.jsr303.ClassValidator.validateBeanNet(ClassValidator.java:393)
>>>> at org.apache.bval.jsr303.ClassValidator.validate(ClassValidator.java:149)
>>>> at
>>>> com.datatorrent.stram.plan.logical.LogicalPlan.validate(LogicalPlan.java:1672)
>>>> at com.datatorrent.stram.StramClient.<init>(StramClient.java:161) at
>>>> com.datatorrent.stram.client.StramAppLauncher.launchApp(StramAppLauncher.java:509)
>>>> at com.datatorrent.stram.cli.DTCli$LaunchCommand.execute(DTCli.java:2050)
>>>> at com.datatorrent.stram.cli.DTCli.launchAppPackage(DTCli.java:3456) at
>>>> com.datatorrent.stram.cli.DTCli.access$7100(DTCli.java:106) at
>>>> com.datatorrent.stram.cli.DTCli$LaunchCommand.execute(DTCli.java:1895) at
>>>> com.datatorrent.stram.cli.DTCli$3.run(DTCli.java:1449) Fatal error
>>>> encountered
>>>>
>>>>
>>>>
>>>>
>>>> Regards,
>>>> Ananth
>>>>
>>>> On Tue, May 3, 2016 at 3:22 AM, hsy541@gmail.com <hsy541@gmail.com>
>>>> wrote:
>>>>
>>>>> Hey Ananth,
>>>>>
>>>>> Can you unzip your apa file to see if it is in the lib folder? If it
>>>>> is not there, it means the packaging is not correct.
>>>>>
>>>>> Regards,
>>>>> Siyuan
>>>>>
>>>>> On Mon, May 2, 2016 at 4:39 AM, Ananth Gundabattula <
>>>>> agundabattula@gmail.com> wrote:
>>>>>
>>>>>> Hello All,
>>>>>>
>>>>>> I was able to get around the issue pasted above by manually copying
>>>>>> the javaee-api-7.0 jar inside the lib folder of Apex engine. It may
be
>>>>>> noted that the code works perfectly fine in a unit test that launches
all
>>>>>> of the operators in the DAG. ( Works end to end ) . However when
I launch
>>>>>> it on CDH 5.7 I run into the exception pasted above. It may be noted
that
>>>>>> the exception is being raised when I launch the app and the Apex
engine is
>>>>>> trying to validate the newly deployed app.
>>>>>>
>>>>>> I am suspecting that this could be an issue with incompatibility
with
>>>>>> CDH 5.7 ( The Hadoop stack on which I am trying to run Apex 3.3 on
)
>>>>>>
>>>>>> Could anyone help me if they were able to run Apex on top of CDH
5.7.
>>>>>> I got the same exception with both Apex 3.3 and 3.2.
>>>>>>
>>>>>> Regards,
>>>>>> Ananth
>>>>>>
>>>>>> On Sat, Apr 30, 2016 at 11:34 AM, Ananth Gundabattula <
>>>>>> agundabattula@gmail.com> wrote:
>>>>>>
>>>>>>> Hello All,
>>>>>>>
>>>>>>> I am getting the following exception when I launch my Apex app.
>>>>>>>
>>>>>>> I tried including javaee-api- version 7.0 as well to get around
this
>>>>>>> error but does not seem to take effect.
>>>>>>>
>>>>>>> Any ideas why javax.persistence.Persistence is not getting loaded
by
>>>>>>> the APex engine classloader ?
>>>>>>>
>>>>>>> An error occurred trying to launch the application. Server message:
>>>>>>>> java.lang.NoClassDefFoundError: javax/persistence/Persistence
at
>>>>>>>> org.apache.bval.jsr303.resolver.JPATraversableResolver.isReachable(JPATraversableResolver.java:34)
>>>>>>>> at
>>>>>>>> org.apache.bval.jsr303.resolver.DefaultTraversableResolver.isReachable(DefaultTraversableResolver.java:60)
>>>>>>>> at
>>>>>>>> org.apache.bval.jsr303.resolver.CachingTraversableResolver.isReachable(CachingTraversableResolver.java:82)
>>>>>>>> at
>>>>>>>> org.apache.bval.jsr303.ConstraintValidation.isReachable(ConstraintValidation.java:241)
>>>>>>>> at
>>>>>>>> org.apache.bval.jsr303.ConstraintValidation.validate(ConstraintValidation.java:166)
>>>>>>>> at
>>>>>>>> org.apache.bval.jsr303.ConstraintValidation.validate(ConstraintValidation.java:141)
>>>>>>>> at
>>>>>>>> org.apache.bval.util.ValidationHelper.validateProperty(ValidationHelper.java:233)
>>>>>>>> at
>>>>>>>> org.apache.bval.util.ValidationHelper.validateBean(ValidationHelper.java:216)
>>>>>>>> at
>>>>>>>> org.apache.bval.jsr303.ClassValidator.validateBeanNet(ClassValidator.java:393)
>>>>>>>> at org.apache.bval.jsr303.ClassValidator.validate(ClassValidator.java:149)
>>>>>>>> at
>>>>>>>> com.datatorrent.stram.plan.logical.LogicalPlan.validate(LogicalPlan.java:1672)
>>>>>>>> at com.datatorrent.stram.StramClient.<init>(StramClient.java:161)
at
>>>>>>>> com.datatorrent.stram.client.StramAppLauncher.launchApp(StramAppLauncher.java:509)
>>>>>>>> at com.datatorrent.stram.cli.DTCli$LaunchCommand.execute(DTCli.java:2050)
>>>>>>>> at com.datatorrent.stram.cli.DTCli.launchAppPackage(DTCli.java:3456)
at
>>>>>>>> com.datatorrent.stram.cli.DTCli.access$7100(DTCli.java:106)
at
>>>>>>>> com.datatorrent.stram.cli.DTCli$LaunchCommand.execute(DTCli.java:1895)
at
>>>>>>>> com.datatorrent.stram.cli.DTCli$3.run(DTCli.java:1449) Fatal
error
>>>>>>>> encountered
>>>>>>>
>>>>>>>
>>>>>>> Regards,
>>>>>>> Ananth
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>

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