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https://issues.apache.org/jira/browse/FLINK-4015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15314026#comment-15314026
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Robert Metzger commented on FLINK-4015:
---------------------------------------
Hi Sebastian,
do you have set the number of retires set to a value higher than 0 ?
By default, its set to 0 so the producer will not retry in cause such an error
happens.
I would recommend to allow more retries. The reason why we don't set the number
to something higher by default is, that retries can cause duplicate records in
kafka.
> FlinkKafkaProducer08 fails when partition leader changes
> --------------------------------------------------------
>
> Key: FLINK-4015
> URL: https://issues.apache.org/jira/browse/FLINK-4015
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector
> Affects Versions: 1.0.2
> Reporter: Sebastian Klemke
>
> When leader for a partition changes, producer fails with the following
> exception:
> {code}
> 06:34:50,813 INFO org.apache.flink.yarn.YarnJobManager
> - Status of job b323f5de3d32504651e861d5ecb27e7c (JOB_NAME) changed to
> FAILING.
> java.lang.RuntimeException: Could not forward element to next operator
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:354)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:337)
> at
> org.apache.flink.streaming.api.operators.TimestampedCollector.collect(TimestampedCollector.java:51)
> at OPERATOR.flatMap2(OPERATOR.java:82)
> at OPERATOR.flatMap2(OPERATOR.java:16)
> at
> org.apache.flink.streaming.api.operators.co.CoStreamFlatMap.processElement2(CoStreamFlatMap.java:63)
> at
> org.apache.flink.streaming.runtime.io.StreamTwoInputProcessor.processInput(StreamTwoInputProcessor.java:207)
> at
> org.apache.flink.streaming.runtime.tasks.TwoInputStreamTask.run(TwoInputStreamTask.java:89)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:225)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.RuntimeException: Could not forward element to next
> operator
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:354)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:337)
> at
> org.apache.flink.streaming.api.operators.StreamMap.processElement(StreamMap.java:39)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:351)
> ... 10 more
> Caused by: java.lang.RuntimeException: Could not forward element to next
> operator
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:354)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:337)
> at
> org.apache.flink.streaming.api.operators.StreamMap.processElement(StreamMap.java:39)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:351)
> ... 13 more
> Caused by: java.lang.Exception: Failed to send data to Kafka: This server is
> not the leader for that topic-partition.
> at
> org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducerBase.checkErroneous(FlinkKafkaProducerBase.java:282)
> at
> org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducerBase.invoke(FlinkKafkaProducerBase.java:249)
> at
> org.apache.flink.streaming.api.operators.StreamSink.processElement(StreamSink.java:39)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:351)
> ... 16 more
> Caused by: org.apache.kafka.common.errors.NotLeaderForPartitionException:
> This server is not the leader for that topic-partition.
> {code}
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