MyBatisSystemException during .parallel(). execution

[iceja]

Hi!

After an upgrade Alfresco form version 5.2 to version 6.2 it became unstable: sometimes we got :

org.mybatis.spring.MyBatisSystemException: nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating class java.util.ArrayList with invalid types () or values 

Usually during .parallel(). collection execution. There is full stack trace https://pastebin.com/0jcxFfc5 and there is the code https://pastebin.com/RyPt5d0g . Actually I even can not understand a flow of control, why MyBatis is involved ?

Please help me!

Thank you!

[shadyuser]

Facing same problem +1

[iceja · Accepted solution]

SOLUTION: in Alfresco version 5.2 System.getSecurityManager() == NULL (!!!) but in version 6.2. it has been set up. That is the matter of different behavior (details in https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/concurrent/ForkJoinPool.html). Why v 6.2 set up the SecurityManager and v 5.2. doesn't I still do not know.

[afaust]

Cross-post in https://stackoverflow.com/questions/66357500/why-mybatissystemexception-during-parallel-execution-in...

From the lock at the error stack so far it is quite clear that an issue with Java security manager and granted code permissions is the cause of this:

ndfund-acs_1       | org.mybatis.spring.MyBatisSystemException: nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating class java.util.ArrayList with invalid types () or values (). Cause: java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "accessDeclaredMembers")
ndfund-acs_1       |    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
ndfund-acs_1       |    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
ndfund-acs_1       |    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
ndfund-acs_1       |    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
ndfund-acs_1       |    at java.base/java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:600)
ndfund-acs_1       |    at java.base/java.util.concurrent.ForkJoinTask.reportException(ForkJoinTask.java:678)
ndfund-acs_1       |    at java.base/java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:737)
ndfund-acs_1       |    at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateParallel(ReduceOps.java:919)
ndfund-acs_1       |    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
ndfund-acs_1       |    at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
ndfund-acs_1       |    at com.ecmc.alfresco.rst.nd.reports.data.Form11NSSEverything.generateBeanData(Form11NSSEverything.java:181)

Specifically

Cause: java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "accessDeclaredMembers")

Configuration of policy files and mode of customisation deployment need to be checked. It must be ensured that both the Alfresco web application as well as any extensions deployed into it or on some classpath extension paths are covered by the typical AllPermission grant.

[iceja]

I have checked permissions granted to all web applications in catalina.policy, Actually this error is not reproducible well. This exeception doesn't rise when I remove .parallel(). and use single thread stream processing .

Can this issue be relevant stackoverflow.com/a/64027627/1999752 ?