misslujiaqi opened a new issue, #1920: URL: https://github.com/apache/incubator-seatunnel/issues/1920
### 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 JdbcSource method throws NullPointerException when I run seatunnel . Is this a bug? or I run with an error config. Can I connect Clickhouse as the source through JDBC? ### SeaTunnel Version seatunnel-2.1.1 ### SeaTunnel Config ```conf env { execution.parallelism = 1 } source { JdbcSource { driver = "com.clickhouse.jdbc.ClickHouseDriver" url = "jdbc:clickhouse://hadoop102:8123/" database = "default" username = "default" password = "test" query = "select id from test1" } } transform {} sink { ConsoleSink {} } ``` ### Running Command ```shell ./bin/start-seatunnel-flink.sh -p 2 --config config/jobs/test3.config ``` ### Error Exception ```log 2022-05-19 10:51:11,172 ERROR org.apache.flink.client.cli.CliFrontend [] - Error while running th e command. 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) ~[flink-dist_2.12- 1.13.6.jar:1.13.6] at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222) ~[flink-dist_2.12-1.13.6.jar:1.13.6] at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:114) ~[flink-dist_2.12-1.13.6.jar:1.13. 6] at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:812) ~[flink-dist_2.12-1.13.6.jar:1 .13.6] at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:246) ~[flink-dist_2.12-1.13.6.jar:1.13.6] at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:1054) ~[flink-dist_2.12-1.13.6.jar:1.1 3.6] at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:1132) ~[flink-dist_2.12-1.13.6.jar: 1.13.6] at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_333] at javax.security.auth.Subject.doAs(Subject.java:422) [?:1.8.0_333] at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1754) [flink-shaded-hadoop-2 -uber-2.7.5-10.0.jar:2.7.5-10.0] at org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) [flink-dist_2.12-1.13.6.jar:1.13.6] at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1132) [flink-dist_2.12-1.13.6.jar:1.13.6] Caused by: java.lang.RuntimeException: Execute Flink task error at org.apache.seatunnel.command.flink.FlinkTaskExecuteCommand.execute(FlinkTaskExecuteCommand.java:63) ~[?:?] at org.apache.seatunnel.command.flink.FlinkTaskExecuteCommand.execute(FlinkTaskExecuteCommand.java:39) ~[?:?] at org.apache.seatunnel.Seatunnel.run(Seatunnel.java:48) ~[?:?] at org.apache.seatunnel.SeatunnelFlink.main(SeatunnelFlink.java:27) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_333] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_333] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_333] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_333] at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355) ~[flink-dist_2.12- 1.13.6.jar:1.13.6] ... 11 more Caused by: java.lang.NullPointerException at org.apache.flink.api.java.typeutils.TupleTypeInfoBase.<init>(TupleTypeInfoBase.java:64) ~[flink-dist_2.12-1 .13.6.jar:1.13.6] at org.apache.flink.api.java.typeutils.RowTypeInfo.<init>(RowTypeInfo.java:89) ~[flink-dist_2.12-1.13.6.jar:1. 13.6] at org.apache.seatunnel.flink.jdbc.source.JdbcSource.getRowTypeInfo(JdbcSource.java:273) ~[?:?] at org.apache.seatunnel.flink.jdbc.source.JdbcSource.prepare(JdbcSource.java:144) ~[?:?] at org.apache.seatunnel.flink.jdbc.source.JdbcSource.prepare(JdbcSource.java:70) ~[?:?] at org.apache.seatunnel.command.BaseTaskExecuteCommand.lambda$prepare$0(BaseTaskExecuteCommand.java:71) ~[?:?] at java.util.ArrayList.forEach(ArrayList.java:1259) ~[?:1.8.0_333] at org.apache.seatunnel.command.BaseTaskExecuteCommand.prepare(BaseTaskExecuteCommand.java:71) ~[?:?] at org.apache.seatunnel.command.flink.FlinkTaskExecuteCommand.execute(FlinkTaskExecuteCommand.java:59) ~[?:?] at org.apache.seatunnel.command.flink.FlinkTaskExecuteCommand.execute(FlinkTaskExecuteCommand.java:39) ~[?:?] at org.apache.seatunnel.Seatunnel.run(Seatunnel.java:48) ~[?:?] at org.apache.seatunnel.SeatunnelFlink.main(SeatunnelFlink.java:27) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_333] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_333] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_333] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_333] at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355) ~[flink-dist_2.12- 1.13.6.jar:1.13.6] ... 11 more ``` ### Flink or Spark Version flink-1.13.6 ### Java or Scala Version Java 1.8 ### Screenshots _No response_ ### Are you willing to submit PR? 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