topic Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder in Talend Studio

Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

nfz11 — Sat, 16 Nov 2024 04:16:41 GMT

I am getting this error when I run my job in the Talend cloud but not when I run it in Studio. I also have another job that references that class in its code and it runs fine in the cloud. It looks like that class is used by the tExtractJSONFields component when Xpath is used in the 'Read by' field.

My studio version is:

Talend Cloud Real-Time Big Data Platform
Version: 7.2.1
Build id: 20190620_1446
OS: Windows 10, v.10.0, x86_64 / win32
Java version: 1.8.0_221

Any help would be appreciated.

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

Anonymous — Fri, 25 Oct 2019 04:22:57 GMT

Hi
I have many jobs that use tExtractJsonFields component are scheduled to run on Talend Cloud, I publish the jobs from studio 7.1.1, all of them works fine. I am not sure if it is a bug on studio 7.2.1? Need to do some testing.
Have you tried to re-publish the job or create a new job? Do they always have the same issue?

Regards
Shong

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

nfz11 — Fri, 25 Oct 2019 05:06:19 GMT

I have other jobs in 7.2.1 that reference the same JsonXMLConfigBuilder class and work fine. I tried rebuilding, redeploying, etc. but no help. This job runs fine in Studio but not in the Talend cloud. I will try to reproduce the error with a simple job if I can.

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

Anonymous — Fri, 25 Oct 2019 05:14:36 GMT

Share me the simple job which can used to reproduce the error, I will test it also on v7.2.1.

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

nfz11 — Mon, 25 Nov 2019 18:19:28 GMT

See attached simple job that reproduces the error. Note that the error seems to occur only when recursion is implemented via a facade into a sub job. Thanks.

TestJsonXMLConfigBuilderBug.zip

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

Anonymous — Tue, 26 Nov 2019 08:06:58 GMT

@nfz11, I have tried to import your job, but it missed the child job called by tRunJob, can you try to export the main job & child job again?

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

nfz11 — Wed, 27 Nov 2019 04:58:19 GMT

@shong here is the export of the job again, this time I included dependencies. Thanks.

TestJsonXMLConfigBuilderBug.zip

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

nfz11 — Wed, 04 Dec 2019 17:06:10 GMT

Hi @shong were you able to look at the latest job upload? Thanks.

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

Anonymous — Thu, 05 Dec 2019 06:38:10 GMT

@nfz11, I have imported your job and make some testing on v7.2.1, the job works both in studio and Talend Cloud. It seems the required jar staxon-1.2.jar is missing during you publish the job to Talend Cloud. Please check and make some testing.
1. Go to Windows-->Show views-->Talend and open Modules view.
2. Check if the staxon-1.2.jar is installed or not.

3. Delete the old task on Talend Cloud and re-deploy the job to Talend Cloud.

Regards

Shong

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

nfz11 — Mon, 09 Dec 2019 22:30:05 GMT

Hi @shong thanks for the suggestion. I looked at the module list like you said and staxon-1.2.jar was already installed. I installed a few other modules that were missing for tExtractJSONFields and deleted the job from the cloud and uploaded it again, but I still got the same error. It is strange because like I said, other jobs that use tExtractJSONFields run in the cloud without a problem. It is only when I introduce recursion that the job fails.

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

rmartin2 — Tue, 10 Dec 2019 00:35:08 GMT

Hi !

There's a flaw in the module updater for the Cloud Client. It seems that the Studio is unable to detect changes between libraries and java version, leading to problems in compilation.

Have you upgraded your Java version recently, or try to manually add a jar ?

If so, try to revert it back.

If it does not work it means that you'll have to delete manually the .jar (in your filesystem), so it can be downloaded again properly. The maven repo use precise versions of some jar and you will not be able to compile without them.

Re: Exception in thread "main" java.lang.NoClassDefFoundError: de/odysseus/staxon/json/JsonXMLConfigBuilder

Anonymous — Thu, 12 Dec 2019 02:58:05 GMT

@nfz11, I have no idea now why this issue only occurs this issue. I will check with our developers if they have seen the same issue reported by others or it is a known bug. In the mean time, can you try to delete the jar and install it again as rmartin suggested?

Regards
Shong