alextinng opened a new issue, #6032: URL: https://github.com/apache/seatunnel/issues/6032
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/seatunnel/issues?q=is%3Aissue+label%3A%22bug%22) and found no similar issues. ### What happened java.util.ConcurrentModificationException is thrown sometimes ### SeaTunnel Version 2.3.2 ### SeaTunnel Config ```conf env { execution.parallelism = 1 job.mode = "BATCH" } source { TDengine { url : "jdbc:TAOS-RS://localhost:6041/" username : "root" password : "taosdata" database : "test" stable : "xxxxx" lower_bound : "2023-12-12 14:38:05.000" upper_bound : "2023-12-12 14:38:16.800" result_table_name = "src" } } sink { Console {} } ``` ### Running Command ```shell bin/seatunnel.sh --config a.conf -e local ``` ### Error Exception ```log 2023-12-19 14:01:40,208 INFO org.apache.seatunnel.engine.server.dag.physical.PhysicalVertex - Job SeaTunnel_Job (789371780568449025), Pipeline: [(1/1)], task: [pipeline-1 [Source[0]-TDengine-default-identifier]-SourceTask (1/1)] turn to end state FAILED. 2023-12-19 14:01:40,208 ERROR org.apache.seatunnel.engine.server.dag.physical.PhysicalVertex - Job SeaTunnel_Job (789371780568449025), Pipeline: [(1/1)], task: [pipeline-1 [Source[0]-TDengine-default-identifier]-SourceTask (1/1)] end with state FAILED and Exception: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextNode(HashMap.java:1473) at java.util.HashMap$KeyIterator.next(HashMap.java:1497) at java.lang.Iterable.forEach(Iterable.java:74) at org.apache.seatunnel.connectors.seatunnel.tdengine.source.TDengineSourceReader.pollNext(TDengineSourceReader.java:63) at org.apache.seatunnel.engine.server.task.flow.SourceFlowLifeCycle.collect(SourceFlowLifeCycle.java:135) at org.apache.seatunnel.engine.server.task.SourceSeaTunnelTask.collect(SourceSeaTunnelTask.java:84) at org.apache.seatunnel.engine.server.task.SeaTunnelTask.stateProcess(SeaTunnelTask.java:165) at org.apache.seatunnel.engine.server.task.SourceSeaTunnelTask.call(SourceSeaTunnelTask.java:89) at org.apache.seatunnel.engine.server.TaskExecutionService$BlockingWorker.run(TaskExecutionService.java:613) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) ``` ### Zeta or Flink or Spark Version _No response_ ### Java or Scala Version _No response_ ### Screenshots _No response_ ### Are you willing to submit PR? - [X] 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. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
