I took a look
at
./flink-connectors/flink-connector-kafka-0.9/src/main/java/org/apache/flink/streaming/connectors/kafka/internal/Kafka09Fetcher.java
It seems the List subscribedPartitionStates was being modified
when runFetchLoop iterated the List.
This can happen if, e.g., FlinkKafkaConsumer runs the following code
concurrently:
kafkaFetcher.addDiscoveredPartitions(discoveredPartitions);
You can log a JIRA.
If you have unit test reproducing this, that would be great.
FYI
On Fri, May 11, 2018 at 5:15 PM, Vishal Santoshi <[email protected]>
wrote:
> java.util.ConcurrentModificationException
> at
> java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:966)
> at java.util.LinkedList$ListItr.next(LinkedList.java:888)
> at
> org.apache.flink.streaming.connectors.kafka.internal.Kafka09Fetcher.runFetchLoop(Kafka09Fetcher.java:134)
>
> .
>
> .
>
> .
>
>
>
> This flink 1.4.0
>
> Any ideas folks ?
>
