yujianbo issues

Results 6 issues of


                                            yujianbo

[Bug] Excuting spark core spark.sql("add jar path/xxx") will occur `ClassNotFound with classloader: org.apache.spark.util.MutableURLClassLoade`

### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) ### Search before asking - [X] I have searched in the [issues](https://github.com/apache/incubator-kyuubi/issues?q=is%3Aissue) and found no...

kind:bug

priority:major

[Bug] Excuting spark core `spark.sql("add jar path/xxxx")`,if the path is hdfs or other remote path will occur npe

kind:bug

priority:major

[Bug] Regardless of the client or cluster spark-mode, "spark.jar=xxx.jar" has been specified in spark conf, you cannot run "import XXXX" statement from the jar when executing spark scala core

kind:bug

priority:major

[Improvement] Kyuubi pool-share-level provides random policies may cause task-hot-issues or production accident

### What would you like to be improved? Provide more balanced policies based on spark engine operation soon！！！

[Bug] kyuubi UI cann't show spark-scala-core statement running state

kind:bug

priority:major

https://github.com/absaoss/spline-spark-agent is Error

The error message ：`Syntax error in text mermaid version 11.4.1`