521daichen opened a new issue, #3748: URL: https://github.com/apache/incubator-seatunnel/issues/3748
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/incubator-seatunnel/issues?q=is%3Aissue+label%3A%22bug%22) and found no similar issues. ### What happened Seatunnel 2.3.0-beta version, the udf class cannot be loaded, but the class has been placed in the lib directory of flink ### SeaTunnel Version 2.3.0-beta ### SeaTunnel Config ```conf env { execution.parallelism = 1 } source { JdbcSource { result_table_name = "test" url = "jdbc:mysql://localhost/t" driver = "com.mysql.cj.jdbc.Driver" username = "root" password = "123456789" query = "select name from test" } } transform { udf { function.with_dylan = "com.qq.qidian.flinkUdf.WithDylan" } sql { result_table_name = "t1" sql = "select with_dylan(t1.name) as `name`, t2.age as `age` from test as t1 inner join test_middle as t2 on t1.name=t2.name" } } sink { JdbcSink { source_table_name = "t1" driver = "com.mysql.cj.jdbc.Driver" url = "jdbc:mysql://localhost:3306/t" username = root password = 123456789 query = "insert into test_sink(name, age) values(?,?)" } } ``` ### Running Command ```shell ./bin/start-seatunnel-flink.sh --config ./config/2.conf ``` ### Error Exception ```log ➜ apache-seatunnel-incubating-2.3.0-beta ./bin/start-seatunnel-flink.sh --config ./config/2.conf Export JVM_ARGS: -Dexecution.parallelism=1 Execute SeaTunnel Flink Job: ${FLINK_HOME}/bin/flink run -c org.apache.seatunnel.core.flink.SeatunnelFlink /Users/dylan/flink/apache-seatunnel-incubating-2.3.0-beta/lib/seatunnel-core-flink.jar --config ./config/2.conf ------------------------------------------------------------ The program finished with the following exception: org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: Execute Flink task error at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:372) at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222) at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:114) at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:812) at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:246) at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:1054) at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:1132) at org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:28) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1132) Caused by: org.apache.seatunnel.core.base.exception.CommandExecuteException: Execute Flink task error at org.apache.seatunnel.core.flink.command.FlinkApiTaskExecuteCommand.execute(FlinkApiTaskExecuteCommand.java:84) at org.apache.seatunnel.core.base.Seatunnel.run(Seatunnel.java:39) at org.apache.seatunnel.core.flink.SeatunnelFlink.main(SeatunnelFlink.java:34) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355) ... 8 more Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: com.qq.qidian.flinkUdf.WithDylan at org.apache.seatunnel.flink.transform.UDF.registerFunction(UDF.java:71) at org.apache.seatunnel.flink.batch.FlinkBatchExecution.start(FlinkBatchExecution.java:64) at org.apache.seatunnel.core.flink.command.FlinkApiTaskExecuteCommand.execute(FlinkApiTaskExecuteCommand.java:82) ... 15 more Caused by: java.lang.ClassNotFoundException: com.qq.qidian.flinkUdf.WithDylan at java.net.URLClassLoader.findClass(URLClassLoader.java:387) at java.lang.ClassLoader.loadClass(ClassLoader.java:418) at org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:64) at org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:74) at org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:48) at java.lang.ClassLoader.loadClass(ClassLoader.java:351) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.apache.seatunnel.flink.transform.UDF.registerFunction(UDF.java:68) ... 17 more ``` ### Flink or Spark Version flink 1.13.0 ### Java or Scala Version jdk8 ### Screenshots <img width="1199" alt="image" src="https://user-images.githubusercontent.com/21999616/208224831-c2e042f2-a9a6-41da-bf3f-60a9d639baf8.png";> ### Are you willing to submit PR? - [ ] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. 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