XComp edited a comment on pull request #17152:
URL: https://github.com/apache/flink/pull/17152#issuecomment-913537258
Running the FLINK-23850 job on this PR's codebase results in the following
error with constant data being added to the Kafka input topic:
```
2021-09-06 13:07:45
java.lang.RuntimeException: Failed to send data to Kafka
at
org.apache.flink.connector.kafka.sink.KafkaWriter.lambda$null$0(KafkaWriter.java:131)
at
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.runThrowing(StreamTaskActionExecutor.java:50)
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:338)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:324)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:201)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:789)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:741)
at
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:958)
at
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:937)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:766)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:575)
at java.lang.Thread.run(Thread.java:748)
Caused by:
org.apache.flink.kafka.shaded.org.apache.kafka.common.errors.UnknownProducerIdException:
This exception is raised by the broker if it could not locate the producer
metadata associated with the producerId in question. This could happen if, for
instance, the producer's records were deleted because their retention time had
elapsed. Once the last records of the producerId are removed, the producer's
metadata is removed from the broker, and future appends by the producer will
return this exception.
```
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