flink 写入 kafka 并实现 eos 语义，kafka报错

[yanlishuai]

Hi All，


 我这里从flink 写入 kafka 并实现 eos 语义， 但是出现了以下错误，希望遇到过的大佬能给点帮助


0-05-21 16:52:15,057 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source: Custom Source (1/1) (f65b2869d898a050238c53f9fbc9573b) switched from DEPLOYING to RUNNING.
2020-05-21 16:52:15,062 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph        - Co-Process-Broadcast -> Map -> Sink: Unnamed (1/1) (d0739aa81367223f83a63a86307fffb3) switched from DEPLOYING to RUNNING.
2020-05-21 16:52:15,276 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph        - Co-Process-Broadcast -> Map -> Sink: Unnamed (1/1) (d0739aa81367223f83a63a86307fffb3) switched from RUNNING to FAILED.
org.apache.kafka.common.KafkaException: org.apache.kafka.common.KafkaException: Could not find a coordinator with type TRANSACTION with key Co-Process-Broadcast -> Map -> Sink: Unnamed-c4ffe334eee7821772b24597621064ce-32 due tounexpected error: The server experienced an unexpected error when processing the request.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:593)
        at java.util.concurrent.ForkJoinTask.reportException(ForkJoinTask.java:677)
        at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:735)
        at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:583)
        at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer.abortTransactions(FlinkKafkaProducer.java:1101)
        at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer.initializeState(FlinkKafkaProducer.java:1037)
        at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)
        at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)
        at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)
        at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:284)
        at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeStateAndOpen(StreamTask.java:989)
        at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:453)
        at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:94)
        at org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:448)
        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:460)
        at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:708)
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:533)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.kafka.common.KafkaException: Could not find a coordinator with type TRANSACTION with key Co-Process-Broadcast -> Map -> Sink: Unnamed-c4ffe334eee7821772b24597621064ce-32 due tounexpected error: The server experienced an unexpected error when processing the request.
        at org.apache.kafka.clients.producer.internals.TransactionManager$FindCoordinatorHandler.handleResponse(TransactionManager.java:1142)
        at org.apache.kafka.clients.producer.internals.TransactionManager$TxnRequestHandler.onComplete(TransactionManager.java:909)
        at org.apache.kafka.clients.ClientResponse.onComplete(ClientResponse.java:109)
        at org.apache.kafka.clients.NetworkClient.completeResponses(NetworkClient.java:557)
        at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:549)
        at org.apache.kafka.clients.producer.internals.Sender.runOnce(Sender.java:288)
        at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:235)
        ... 1 more