hailin0 opened a new issue, #2754: URL: https://github.com/apache/incubator-seatunnel/issues/2754
### 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 issuss: - java.util.ConcurrentModificationException: KafkaConsumer is not safe for multi-threaded access - Duplicate consume message when commit_on_checkpoint ennable ### SeaTunnel Version dev branch ### SeaTunnel Config ```conf env { execution.parallelism = 2 job.mode = "STREAMING" } ``` ### Running Command ```shell run as example module ``` ### Error Exception ```log 22/09/15 17:49:04 WARN Task: Source: SeaTunnel KafkaSource -> Sink Writer: Unnamed (1/1)#0 (2e1f52d0a07ae1993e29025337346e81) switched from RUNNING to FAILED with failure cause: java.util.ConcurrentModificationException: KafkaConsumer is not safe for multi-threaded access at org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:2490) at org.apache.kafka.clients.consumer.KafkaConsumer.acquireAndEnsureOpen(KafkaConsumer.java:2474) at org.apache.kafka.clients.consumer.KafkaConsumer.commitSync(KafkaConsumer.java:1496) at org.apache.kafka.clients.consumer.KafkaConsumer.commitSync(KafkaConsumer.java:1400) at org.apache.kafka.clients.consumer.KafkaConsumer.commitSync(KafkaConsumer.java:1357) at org.apache.seatunnel.connectors.seatunnel.kafka.source.KafkaSourceReader.notifyCheckpointComplete(KafkaSourceReader.java:144) at org.apache.seatunnel.translation.source.ParallelSource.notifyCheckpointComplete(ParallelSource.java:202) at org.apache.seatunnel.translation.flink.source.BaseSeaTunnelSourceFunction.notifyCheckpointComplete(BaseSeaTunnelSourceFunction.java:116) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:130) at org.apache.flink.streaming.runtime.tasks.StreamOperatorWrapper.notifyCheckpointComplete(StreamOperatorWrapper.java:99) at org.apache.flink.streaming.runtime.tasks.SubtaskCheckpointCoordinatorImpl.notifyCheckpointComplete(SubtaskCheckpointCoordinatorImpl.java:334) at org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:1171) at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$notifyCheckpointCompleteAsync$10(StreamTask.java:1136) at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$notifyCheckpointOperation$12(StreamTask.java:1159) at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:93) at org.apache.flink.streaming.runtime.tasks.mailbox.Mail.run(Mail.java:90) at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMailsWhenDefaultActionUnavailable(MailboxProcessor.java:344) at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:330) at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:202) at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:684) at org.apache.flink.streaming.runtime.tasks.StreamTask.executeInvoke(StreamTask.java:639) at org.apache.flink.streaming.runtime.tasks.StreamTask.runWithCleanUpOnFail(StreamTask.java:650) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:623) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:779) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:566) at java.base/java.lang.Thread.run(Thread.java:834) Suppressed: java.lang.RuntimeException: java.util.ConcurrentModificationException: KafkaConsumer is not safe for multi-threaded access at org.apache.seatunnel.translation.flink.source.BaseSeaTunnelSourceFunction.cancel(BaseSeaTunnelSourceFunction.java:110) at org.apache.flink.streaming.api.operators.StreamSource.cancel(StreamSource.java:154) at org.apache.flink.streaming.runtime.tasks.SourceStreamTask.cancelTask(SourceStreamTask.java:210) at org.apache.flink.streaming.runtime.tasks.SourceStreamTask.cancelTask(SourceStreamTask.java:191) at org.apache.flink.streaming.runtime.tasks.StreamTask.runWithCleanUpOnFail(StreamTask.java:656) ... 4 more Caused by: java.util.ConcurrentModificationException: KafkaConsumer is not safe for multi-threaded access at org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:2490) at org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2373) at org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2351) at org.apache.seatunnel.connectors.seatunnel.kafka.source.KafkaSourceReader.close(KafkaSourceReader.java:85) at org.apache.seatunnel.translation.source.ParallelSource.close(ParallelSource.java:149) at org.apache.seatunnel.translation.flink.source.BaseSeaTunnelSourceFunction.cancel(BaseSeaTunnelSourceFunction.java:107) ... 8 more ``` ### Flink or Spark Version _No response_ ### Java or Scala Version _No response_ ### Screenshots _No response_ ### Are you willing to submit PR? 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